CN116728712A

CN116728712A - Water valve executing motor shell mould

Info

Publication number: CN116728712A
Application number: CN202310901206.0A
Authority: CN
Inventors: 张凯军
Original assignee: Ningbo Hengfu Auto Parts Development Co ltd
Current assignee: Ningbo Hengfu Auto Parts Development Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2023-09-12
Anticipated expiration: 2043-07-21
Also published as: CN116728712B

Abstract

The application discloses a water valve executing motor shell mould which comprises a fixed mould mechanism, a movable mould mechanism, an ejection mechanism, a forming rod and a driving mechanism, wherein the fixed mould mechanism is arranged on the fixed mould mechanism; the movable die mechanism is arranged on the right side of the fixed die mechanism in a left-right sliding manner, and a forming cavity for forming the shell is formed between the movable die mechanism and the fixed die mechanism; the positions of the movable mould mechanism corresponding to the threaded holes on the shell are provided with mounting holes; the forming rod can slide left and right and is rotatably arranged in the mounting hole, and a threaded part for forming a threaded hole is formed at the left end of the forming rod; the driving mechanism is arranged on the movable mould mechanism and is used for driving the forming rod to rotate, and the forming rod can be connected with the driving mechanism in a left-right sliding manner; when the driving mechanism drives the forming rod to rotate, the internal threads of the threaded hole push the threaded portion to the right, thereby forcing the threaded portion to disengage from the threaded hole. The die can integrally form the threaded hole during injection molding, has few processing steps and high processing efficiency.

Description

Water valve executing motor shell mould

Technical Field

The application relates to the technical field of injection molds, in particular to a water valve execution motor shell mold.

Background

As shown in fig. 1 and 2, the conventional water valve actuating motor housing includes two plastic housings 100. Wherein, a screw hole 101 is arranged on one shell 100, and a screw hole 102 is arranged on the other shell 100; in the mounting process, the screws are inserted through the screw holes 102 and then screwed into the screw holes 101, so that the two housings 100 can be fixed.

In the related art, a housing 100 of a water valve actuator motor is generally formed by an injection mold. However, the screw hole 101 in the housing 100 is required to be formed by tapping by a tapping device after the housing 100 is injection-molded. Obviously, the processing mode has a plurality of processing steps and low processing efficiency, and is not beneficial to industrial production.

Therefore, how to improve the existing water valve execution motor housing mold to overcome the above-mentioned shortcomings is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

An object of the present application is to provide a water valve execution motor housing mold capable of integrally forming a screw hole, having few processing steps, and having high processing efficiency.

In order to achieve the above purpose, the application adopts the following technical scheme: a water valve executing motor shell mould comprises a fixed mould mechanism, a movable mould mechanism, an ejection mechanism, a forming rod and a driving mechanism; the movable die mechanism is arranged on the right side of the fixed die mechanism in a left-right sliding manner, and a forming cavity for forming the shell is formed between the movable die mechanism and the fixed die mechanism; mounting holes are formed in positions, corresponding to the threaded holes in the shell, of the movable die mechanism; the forming rod can slide left and right and is rotatably arranged in the mounting hole, and a threaded part for forming the threaded hole is formed at the left end of the forming rod; the driving mechanism is arranged on the movable mould mechanism and is used for driving the forming rod to rotate, and the forming rod can be connected with the driving mechanism in a left-right sliding manner; when the driving mechanism drives the forming rod to rotate, the internal thread of the threaded hole pushes the threaded part to the right, so that the threaded part is forced to be separated from the threaded hole.

Preferably, the driving mechanism comprises a driving sleeve and a driving piece, the driving sleeve is rotatably arranged on the movable die mechanism, and the rotation axis of the driving sleeve is overlapped with the rotation axis of the forming rod; the driving piece is arranged on the movable mould mechanism and is used for driving the driving sleeve to rotate; the forming rod is connected to the inside of the driving sleeve in a left-right sliding mode, and the forming rod and the driving sleeve cannot rotate relatively.

Preferably, the movable mold mechanism comprises a movable mold body and a movable mold plate, wherein the movable mold body is arranged on the right side of the fixed mold mechanism in a left-right sliding manner, and the movable mold plate is arranged on the right side of the movable mold body in a left-right sliding manner; the mounting hole is formed in the movable die body, and the driving sleeve is rotatably arranged in the movable die body; the driving piece comprises a transmission gear set and a rack; the transmission gear set is arranged on the movable die body, the right end of the rack is arranged on the movable die plate, and the rack is connected with the driving sleeve through the transmission gear set; when the movable mould plate slides left and right relative to the movable mould body, the rack drives the driving sleeve to rotate through the transmission gear set.

Preferably, the transmission gear set comprises a first gear, a second gear, a third gear, a first bevel gear and a second bevel gear; the first gear is coaxially arranged at the right end of the driving sleeve, and the first gear is suitable for limiting the forming rod to slide rightwards; the second gear, the third gear, the first bevel gear and the second bevel gear are all rotatably arranged on the movable die body, the axis of the second gear is parallel to the axis of the first gear, and the second gear is meshed with the first gear; the axis of the third gear is perpendicular to the axis of the first gear, and the third gear is meshed with the rack; the first bevel gear is coaxially arranged with the second gear, the second bevel gear is coaxially arranged with the third gear, and the first bevel gear is meshed with the second bevel gear.

Preferably, the transmission gear set further comprises an intermediate gear, each first gear on each driving sleeve corresponding to the same shell is suitable for being meshed with each other through the intermediate gear, and one first gear or one intermediate gear is meshed with the second gear.

Preferably, the driving piece further comprises a gear box, the gear box is arranged on the movable die body, and the positions, corresponding to the driving sleeve and the rack, on the gear box are provided with abdication holes; the right end of the driving sleeve penetrates into the gear box through the corresponding yielding hole, and the second gear, the third gear, the intermediate gear, the first bevel gear and the second bevel gear are rotatably arranged in the gear box.

Preferably, the water valve executing motor shell mold further comprises a self-locking mechanism, wherein the self-locking mechanism comprises a first locking piece and a second locking piece, and the first locking piece and the second locking piece are arranged on the movable mold body, the movable mold plate and the fixed mold mechanism; when the die is opened, the first locking piece is used for locking the movable die body and the movable die plate, so that the movable die body and the movable die plate slide rightwards at the same time, and the fixed die mechanism, the shell and the forming rod are static; when the movable die body is separated from the shell, the first locking piece is automatically unlocked, and the second locking piece is used for locking the movable die body and the fixed die mechanism, so that the movable die plate continuously slides rightwards relative to the movable die body; when the threaded portion is separated from the threaded hole, the second locking piece is automatically unlocked, and the first locking piece is used for locking the movable die body and the movable die plate, so that the movable die body and the movable die plate slide rightwards simultaneously.

Preferably, a limiting groove is formed in the outer side wall of the movable die body along the left-right direction, and a locking groove is formed in the limiting groove; the first locking piece comprises a first rod body, a second rod body, a first locking pin, a first elastic piece and a first limiting block; the right end of the first rod body is arranged on the movable template, the left end of the first rod body is provided with a sliding part, the sliding part is connected with the limiting groove in a left-right sliding manner, and the sliding part is provided with a containing hole in a penetrating manner; the first locking pin is slidably arranged in the accommodating hole, a first inclined surface is arranged at one end, far away from the movable die body, of the first locking pin, and a first limiting part is arranged on the outer wall of the first locking pin; the first elastic piece is arranged in the accommodating hole and is used for forcing the first locking pin to slide in a direction away from the movable die body; the first limiting block is arranged at the left end of the first rod body and is used for limiting the first limiting part to be separated from the accommodating hole; the left end of the second rod body is arranged on the fixed die mechanism, and the right end of the second rod body is provided with a second inclined plane; when the mold is closed, the sliding part slides to the left end of the limiting groove, one end of the first locking pin is inserted into the locking groove, and the second rod body is abutted against the other end of the first locking pin, so that the movable mold body and the movable mold plate are locked; when the movable die body and the movable die plate slide rightward at the same time until the movable die body is separated from the shell, the second rod body is separated from the first locking pin, and the first elastic piece forces the first locking pin to slide to be separated from the locking groove, so that the locking between the movable die body and the movable die plate is automatically released; when the threaded part is separated from the threaded hole, the sliding part slides to the right end of the limiting groove, so that the movable die body slides rightwards along with the movable die plate.

Preferably, the outer side wall of the movable mould body is provided with a mounting groove; the second locking piece comprises a third rod body, a fourth rod body, a second locking pin, a second elastic piece and a second limiting block; the second locking pin is slidably arranged in the mounting groove, a third inclined surface is arranged at one end, far away from the movable die body, of the second locking pin, and a second limiting part is arranged on the outer wall of the second locking pin; the second elastic piece is arranged in the mounting groove and is used for forcing the second locking pin to slide in a direction away from the movable die body; the second limiting block is arranged on the movable die body and is used for limiting the second limiting part to be separated from the mounting groove; the right end of the third rod body is arranged on the movable template, the left end of the third rod body is provided with a protruding part, and the right side of the protruding part is provided with a fourth inclined plane; the left end of the fourth rod body is arranged on the fixed die mechanism, the right end of the fourth rod body is provided with a hanging part, and the right side of the hanging part is provided with a fifth inclined plane; when the hooking portion slides rightward through the second locking pin position, the fifth inclined surface forces the second locking pin to slide to the inside of the mounting groove through the third inclined surface; when the mold is closed, the protruding part is positioned at the left side of the second locking pin, and the hanging part is positioned at the right side of the second locking pin; when the movable die body and the movable die plate slide rightwards until the movable die body is separated from the shell, the hanging part is contacted with the second locking pin, so that the movable die body is limited to slide rightwards continuously; when the movable template continues to slide rightwards until the threaded portion is separated from the threaded hole, the fourth inclined surface forces the second locking pin to slide to the inside of the mounting groove just through the third inclined surface, so that the second locking pin is separated from the hanging portion.

Preferably, the fixed die mechanism comprises a fixed die body, and a runner used for communicating the forming cavity and a through hole used for communicating the forming cavity are arranged on the fixed die body in a penetrating manner; the ejection mechanism comprises a top plate and an ejector rod, and the top plate can be arranged on the left side of the fixed die body in a left-right sliding manner; the ejector rod can slide left and right and is arranged in the through hole, and the left end of the ejector rod is arranged in the top plate.

Compared with the prior art, the application has the beneficial effects that: (1) The movable mould mechanism is provided with mounting holes at positions corresponding to the threaded holes in the shell, the forming rod can slide left and right and is rotatably arranged in the mounting holes, and the left end of the forming rod is provided with a threaded part for forming the threaded holes; therefore, the threaded hole is formed in the housing while the housing is being injection-molded by the threaded portion of the left end of the molded rod, and a tapping process step is not required, thereby reducing the process steps of the whole process and improving the process efficiency.

(2) The forming rod can slide left and right and is rotatably arranged in the mounting hole, the driving mechanism is used for driving the forming rod to rotate, and the forming rod can be connected with the driving mechanism in a left and right sliding manner; therefore, when the forming rod is demolded, the forming rod is only required to be driven to rotate by the driving mechanism; after the forming rod rotates, the threaded hole can generate a reaction force on the threaded portion, namely, the internal thread of the threaded hole generates a rightward (axial) thrust on the threaded portion, so that the threaded portion is pushed to move rightward, and the threaded portion is further forced to be automatically separated from the threaded hole.

(3) Most importantly, during the process of separating the threaded portion from the threaded hole, the acting force forcing the threaded portion (i.e. the forming rod) to move rightwards is all from the reaction force generated between the forming rod and the threaded hole when the forming rod is rotated, and the driving mechanism cannot generate rightwards (i.e. axial) acting force on the forming rod, so that the problem that the autorotation stroke and the sliding stroke of the forming rod are not matched is avoided. Otherwise, if the forming rod is driven to slide rightwards and rotate by means of the driving mechanism, the rotation stroke and the sliding stroke of the forming rod need to be strictly controlled to be matched with each other, namely, the forming rod needs to slide rightwards for one screw pitch length of the threaded hole at the same time when rotating for one turn, so that the requirements on machining precision and matching precision are very high, and actual machining is difficult to achieve; once the machining and assembling precision is not satisfactory, or wear occurs after use, the rotation stroke and the sliding stroke of the formed rod are not matched. And because the shell is made of plastic, when the rotation stroke and the sliding stroke of the forming rod are not matched, the threaded part can directly stretch the internal thread of the threaded hole.

Drawings

Fig. 1 is an exploded view of a prior art water valve actuator motor housing.

Fig. 2 is a partial enlarged view of I in fig. 1.

Fig. 3 is a perspective view of a water valve actuator motor housing mold provided by the present application.

Fig. 4 is a perspective view of the stationary mold mechanism of fig. 3 provided by the present application.

Fig. 5 is an exploded view of the movable mold mechanism in fig. 3 according to the present application.

Fig. 6 is an enlarged view of part II of fig. 5 provided by the present application.

Fig. 7 is an enlarged view of a portion of fig. 5 at III, provided by the present application.

Fig. 8 is an enlarged view of the forming bar and drive mechanism of fig. 5 provided by the present application.

Fig. 9 is an exploded view of the structures of fig. 8 provided by the present application.

Fig. 10 is an enlarged view of a portion of the structure of fig. 9 provided by the present application.

Fig. 11 is an exploded view of a portion of the structure of fig. 10 provided by the present application.

Fig. 12 is an enlarged view of a portion at IV in fig. 11 provided by the present application.

Fig. 13 is an enlarged view of a portion of fig. 11 at V provided by the present application.

Fig. 14 is an enlarged view of a portion of VI in fig. 11 provided by the present application.

Fig. 15 is an enlarged view of the first retaining member of fig. 3 provided in accordance with the present application.

Fig. 16 is an enlarged view of a portion of VII in fig. 15 provided by the present application.

Fig. 17 is an exploded view of the structures of fig. 16 provided by the present application.

Fig. 18 is another view of the first rod of fig. 17 according to the present application.

Fig. 19 is an enlarged view of the first locking pin and the first elastic member in fig. 17 provided by the present application.

Fig. 20 is an enlarged view of the second retaining member of fig. 3 provided by the present application.

Fig. 21 is an exploded view of the structures of fig. 20 from another perspective provided by the present application.

Fig. 22 is an enlarged view of the second locking pin, the second elastic member and the second stopper in fig. 21 according to the present application.

Fig. 23 is another view of the structures of fig. 22 according to the present application.

Fig. 24 is a right side view of the water valve actuator motor housing mold of fig. 3 provided by the present application.

Fig. 25 is a cross-sectional view taken along line A-A of fig. 24, provided in accordance with the present application.

Fig. 26 is an enlarged view of a portion VIII in fig. 25 provided by the present application.

Fig. 27 is an enlarged view of a portion of the point IX of fig. 25 provided by the present application.

Fig. 28 is a partial enlarged view of X in fig. 25 provided by the present application.

Fig. 29 is an enlarged view of a portion of the XI of fig. 25 provided by the present application.

In the figure: 1. a fixed die mechanism; 11. a fixed mold body; 2. a movable mould mechanism; 21. a movable die body; 211. a mounting hole; 212. a limit groove; 213. a locking groove; 214. a mounting groove; 22. a movable template; 3. an ejection mechanism; 31. a top plate; 32. a push rod; 4. forming a rod; 41. a threaded portion; 42. a slide block; 5. a driving mechanism; 51. a drive sleeve; 52. a driving member; 521. a gear drive set; 5211. a first gear; 5212. a second gear; 5213. a third gear; 5214. a first bevel gear; 5215. a second bevel gear; 5216. an intermediate gear; 522. a rack; 523. a gear box; 5231. a relief hole; 6. a self-locking mechanism; 61. a first locking member; 611. a first rod body; 6111. a sliding part; 6112. a receiving hole; 612. a second rod body; 6121. a second inclined surface; 613. a first locking pin; 6131. a first inclined surface; 6132. a first limit part; 614. a first elastic member; 615. a first limiting block; 62. a second locking member; 621. a third rod body; 6211. a protruding portion; 6212. a fourth inclined surface; 622. a fourth rod body; 6221. a hanging part; 6222. a fifth inclined surface; 623. a second locking pin; 6231. a third inclined surface; 6232. a second limit part; 624. a second elastic member; 625. a second limiting block; 100. a housing; 101. a threaded hole; 102. screw holes.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation. The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 3 to 5 and 11 to 12, one embodiment of the present application provides a water valve actuating motor housing 100 mold including a fixed mold mechanism 1, a movable mold mechanism 2, an ejector mechanism 3, a forming lever 4, and a driving mechanism 5; the movable mold mechanism 2 is arranged on the right side of the fixed mold mechanism 1 in a left-right sliding manner, and a molding cavity for molding the shell 100 is formed between the movable mold mechanism 2 and the fixed mold mechanism 1; the positions of the movable mould mechanism 2 corresponding to the threaded holes 101 on the shell 100 are provided with mounting holes 211; the forming rod 4 is slidably provided in the mounting hole 211 in a left-right direction and a screw portion 41 for forming the screw hole 101 is formed at the left end of the forming rod 4; the driving mechanism 5 is arranged on the movable mould mechanism 2, the driving mechanism 5 is used for driving the forming rod 4 to rotate, and the forming rod 4 can be connected with the driving mechanism 5 in a left-right sliding manner; when the driving mechanism 5 drives the forming rod 4 to rotate, the internal thread of the threaded hole 101 pushes the threaded portion 41 rightward, thereby forcing the threaded portion 41 out of the threaded hole 101.

The water valve performs the working principle of the motor housing 100 mold: as shown in fig. 24, 25 and 27, by forming the screw hole 101 in the housing 100 while injection-molding the housing 100 by the screw portion 41 of the left end of the molding rod 4, a tapping process step is not required, thereby reducing the process steps of the entire process and improving the process efficiency. In addition, when the forming rod 4 is demolded, the forming rod 4 is only required to be driven to rotate by the driving mechanism 5; after the forming rod 4 rotates, the threaded hole 101 generates a reaction force on the threaded portion 41, that is, the internal thread of the threaded hole 101 generates a rightward (i.e., axial) thrust on the threaded portion 41, so as to push the threaded portion 41 to move rightward, and further force the threaded portion 41 to be automatically separated from the threaded hole 101. In the above process, the forces forcing the screw portion 41 (i.e. the forming rod 4) to move rightward are all from the reaction force generated between the screw hole 101 and the forming rod 4 when the forming rod 4 is rotated, and the driving mechanism 5 cannot generate a rightward (i.e. axial) force on the forming rod 4, so that the problem that the rotation stroke and the sliding stroke of the forming rod 4 are not matched is avoided. Otherwise, if the forming rod 4 is driven to slide rightwards and rotate by means of the driving mechanism 5, the rotation stroke of the forming rod 4 and the mutual matching of the sliding stroke need to be strictly controlled, namely, the screw pitch length of one threaded hole 101 needs to slide rightwards at the same time when the forming rod 4 rotates once, so that the requirements on the machining precision and the matching precision are very high, and the actual machining is difficult to achieve; once the machining and assembling accuracy is not satisfactory, or wear occurs after use, the rotation stroke and the sliding stroke of the forming rod 4 are not matched. Further, since the material of the housing 100 is plastic, when the rotation stroke and the sliding stroke of the molding rod 4 do not match, the screw portion 41 directly breaks the internal thread of the screw hole 101.

It should be understood that the specific structure of the driving mechanism 5 is not limited, and only one specific structure is provided below for reference as long as the rotation of the forming lever 4 is achieved without interfering with the left-right sliding of the forming lever 4.

As shown in fig. 8 to 14, the driving mechanism 5 includes a driving sleeve 51 and a driving piece 52, the driving sleeve 51 is rotatably provided to the movable mold mechanism 2, and the rotation axis of the driving sleeve 51 coincides with the rotation axis of the forming rod 4; the driving piece 52 is arranged on the movable mould mechanism 2, and the driving piece 52 is used for driving the driving sleeve 51 to rotate; the forming rod 4 is connected inside the driving sleeve 51 in a left-right sliding manner, and the forming rod 4 and the driving sleeve 51 can not rotate relatively. That is, under the action of the driving sleeve 51, the driving member 52 only needs to drive the driving sleeve 51 to rotate, so that the driving member 52 and the driving sleeve 51 can be limited in the left-right direction. The driving sleeve 51 rotates to drive the forming rod 4 to synchronously rotate, and meanwhile, the forming rod 4 can slide left and right in the driving sleeve 51, so that axial acting force can not be generated on the forming rod 4.

It can be understood that the manner of sliding the forming rod 4 and the driving sleeve 51 left and right is in the prior art, for example, as shown in fig. 11, 13 and 14, the right end of the forming rod 4 is disposed on the sliding block 42, and the driving sleeve 51 is shaped to fit the sliding block 42, so that the forming rod 4 and the driving sleeve 51 can be limited to generate relative rotation.

As shown in fig. 5 and 9, it can be understood that, in order to save driving elements, the movable mold mechanism 2 includes a movable mold body 21 and a movable mold plate 22, the movable mold body 21 is slidably disposed on the right side of the fixed mold mechanism 1, and the movable mold plate 22 is slidably disposed on the right side of the movable mold body 21; the mounting hole 211 is formed in the movable die body 21, and the driving sleeve 51 is rotatably arranged in the movable die body 21; the driver 52 includes a drive gear set and a rack 522; the transmission gear set is arranged on the movable die body 21, the right end of the rack 522 is arranged on the movable die plate 22, and the rack 522 is connected with the driving sleeve 51 through the transmission gear set; when the movable die plate 22 slides left and right relative to the movable die body 21, the rack 522 drives the driving sleeve 51 to rotate through the transmission gear set. That is, the force generated by driving the movable die plate 22 is transmitted to the driving sleeve 51 through the rack 522 and the transmission gear set in sequence, thereby driving the driving sleeve 51 to rotate.

The specific structure of the drive gear set is not limited, and only one specific structure is provided below for reference: as shown in fig. 10, the transmission gear set includes a first gear 5211, a second gear 5212, a third gear 5213, a first bevel gear 5214 and a second bevel gear 5215; the first gear 5211 is coaxially disposed at the right end of the driving sleeve 51, and the first gear 5211 is adapted to limit the forming rod 4 from sliding rightward; the second gear 5212, the third gear 5213, the first bevel gear 5214 and the second bevel gear 5215 are rotatably arranged on the movable die body 21, the axis of the second gear 5212 is parallel to the axis of the first gear 5211, and the second gear 5212 is meshed with the first gear 5211; the axis of the third gear 5213 is perpendicular to the axis of the first gear 5211, and the third gear 5213 is meshed with the rack 522; the first bevel gear 5214 is arranged coaxially with the second gear 5212, the second bevel gear 5215 is arranged coaxially with the third gear 5213, and the first bevel gear 5214 is meshed with the second bevel gear 5215. Since the first gear 5211 is coaxially disposed at the right end of the driving sleeve 51, and the first gear 5211 is adapted to limit the forming rod 4 from sliding rightward, when the forming rod 4 slides rightward until contacting the first gear 5211, the forming rod 4 cannot continue to slide rightward, so as to ensure that the forming rod 4 can bear the pressure of the raw material in the forming cavity during the casting process.

As shown in fig. 10, to save the number of components and facilitate the overall layout, the transmission gear set further includes an intermediate gear 5216, each first gear 5211 on each driving sleeve 51 corresponding to the same housing 100 is adapted to be meshed with each other through the intermediate gear 5216, and one first gear 5211 or one intermediate gear 5216 is meshed with the second gear 5212.

As shown in fig. 8 and 9, in order to facilitate installation and overall layout, the driving member 52 further includes a gear box 523, the gear box 523 is disposed on the movable mold body 21, and the gear box 523 is provided with a relief hole 5231 corresponding to the driving sleeve 51 and the rack 522; the right end of the driving sleeve 51 penetrates into the gear box 523 through the corresponding yielding hole 5231, and the second gear 5212, the third gear 5213, the intermediate gear 5216, the first bevel gear 5214 and the second bevel gear 5215 are rotatably disposed in the gear box 523. Since the gear box 523 is provided in the movable die body 21, the second gear 5212, the third gear 5213, the intermediate gear 5216, the first bevel gear 5214 and the second bevel gear 5215 are rotatably provided in the gear box 523, which corresponds to the rotatable mounting between them and the movable die body 21.

It should be noted that, the specific structure and the working principle of the ejection mechanism 3 are all in the prior art, and for those skilled in the art, the ejection mechanism 3 may be selectively arranged on the movable mold mechanism 2 and the fixed mold mechanism 1 according to the requirement during actual demolding. However, in order to simplify the layout, in this embodiment, as shown in fig. 4, the fixed mold mechanism 1 includes a fixed mold body 11, and the fixed mold body 11 is provided with a runner for communicating with a molding cavity and a through hole for communicating with the molding cavity, that is, by disposing the runner on the fixed mold body 11, the adhesion between the housing 100 and the fixed mold body 11 is increased, so that when the housing 100 is separated from the movable mold body 21, the housing 100 is not separated from the fixed mold body 11, and the ejector mechanism 3 is omitted from being disposed on the movable mold body 21. As shown in fig. 25, the ejector mechanism 3 includes a top plate 31 and an ejector rod 32, and the top plate 31 is slidably disposed on the left side of the stationary mold body 11; the ejector rod 32 is slidably disposed in the through hole, and the left end of the ejector rod 32 is disposed in the top plate 31. By controlling the top plate 31 to slide rightward, each ejector pin 32 can be driven to slide rightward, thereby ejecting the housing 100 out of the stationary mold body 11.

Referring to fig. 3 and 25, in the present embodiment, in order to ensure that demolding is performed sequentially in the set order, the water valve execution motor housing 100 mold further includes a self-locking mechanism 6, the self-locking mechanism 6 includes a first locking member 61 and a second locking member 62, and the first locking member 61 and the second locking member 62 are provided to the movable mold body 21, the movable mold plate 22, and the fixed mold mechanism 1; when the mold is opened, the first locking member 61 is used for locking the movable mold body 21 and the movable mold plate 22, so that the movable mold body 21 and the movable mold plate 22 slide rightward at the same time, and the fixed mold mechanism 1, the housing 100 and the forming rod 4 are stationary; when the movable die body 21 is separated from the shell 100, the first locking member 61 is automatically unlocked, and the second locking member 62 is used for locking the movable die body 21 and the fixed die mechanism 1, so that the movable die plate 22 continues to slide rightwards relative to the movable die body 21; when the screw portion 41 is separated from the screw hole 101, the second locking member 62 is automatically unlocked, and the first locking member 61 is used to lock the movable die body 21 and the movable die plate 22, thereby simultaneously sliding the movable die body 21 and the movable die plate 22 rightward.

Referring to fig. 15 to 19, in the present embodiment, a limiting groove 212 is provided on the outer side wall of the movable mold body 21 along the left-right direction, and a locking groove 213 (as shown in fig. 6) is provided in the limiting groove 212; the first locking member 61 includes a first rod 611, a second rod 612, a first locking pin 613, a first elastic member 614, and a first stopper 615. The right end of the first rod body 611 is arranged on the movable template 22 (as shown in fig. 5), the left end of the first rod body 611 is provided with a sliding part 6111, the sliding part 6111 is connected with the limit groove 212 in a left-right sliding way, and the sliding part 6111 is provided with a containing hole 6112 (as shown in fig. 17 and 18) in a penetrating way; the first locking pin 613 is slidably arranged in the accommodating hole 6112, a first inclined surface 6131 is arranged at one end, far away from the movable die body 21, of the first locking pin 613, and a first limiting part 6132 is arranged on the outer wall of the first locking pin 613; the first elastic member 614 is disposed in the accommodating hole 6112, and the first elastic member 614 is configured to force the first locking pin 613 to slide away from the movable die body 21; the first limiting block 615 is disposed at the left end of the first rod body 611, and the first limiting block 615 is used for limiting the first limiting portion 6132 to be separated from the accommodating hole 6112; the left end of the second rod 612 is disposed on the fixed mold mechanism 1 (as shown in fig. 4), and the right end of the second rod 612 is provided with a second inclined surface 6121. As shown in fig. 25 and 26, at the time of mold closing, the sliding portion 6111 slides to the left end of the limit groove 212, one end of the first locking pin 613 is inserted into the locking groove 213, and the second rod body 612 abuts against the other end of the first locking pin 613, thereby locking the movable mold body 21 and the movable mold plate 22; when the movable die body 21 and the movable die plate 22 slide rightward at the same time until the movable die body 21 is separated from the housing 100, the second rod body 612 is separated from the first locking pin 613, and the first elastic member 614 forces the first locking pin 613 to slide to be separated from the locking groove 213, thereby automatically releasing the locking between the movable die body 21 and the movable die plate 22; when the screw portion 41 is separated from the screw hole 101, the sliding portion 6111 slides to the right end of the limit groove 212, so that the movable die body 21 simultaneously slides rightward with the die plate 22.

Referring to fig. 20 to 23, in the present embodiment, an outer side wall of the movable mold body 21 is provided with a mounting groove 214 (as shown in fig. 7); the second locking member 62 includes a third rod 621, a fourth rod 622, a second locking pin 623, a second elastic member 624, and a second stopper 625; as shown in fig. 28, the second locking pin 623 is slidably disposed in the mounting groove 214, a third inclined surface 6231 (as shown in fig. 23) is disposed at an end of the second locking pin 623 away from the movable mold body 21, and a second limiting portion 6232 is disposed on an outer wall of the second locking pin 623; the second elastic member 624 is disposed in the mounting groove 214, and the second elastic member 624 is configured to force the second locking pin 623 to slide away from the movable mold body 21; the second stopper 625 is disposed on the movable mold body 21, and the second stopper 625 is used for restricting the second stopper 6232 from being separated from the mounting groove 214. The right end of the third rod 621 is disposed on the movable mold plate 22 (as shown in fig. 5), the left end of the third rod 621 is provided with a protruding portion 6211, and the right side of the protruding portion 6211 is provided with a fourth inclined surface 6212; the left end of the fourth rod body 622 is arranged on the fixed die mechanism 1 (as shown in fig. 4), the right end of the fourth rod body 622 is provided with a hanging part 6221, and the right side of the hanging part 6221 is provided with a fifth inclined surface 6222; when the hooking portion 6221 slides rightward through the position of the second locking pin 623, the fifth inclined surface 6222 forces the second locking pin 623 to slide inside the mounting groove 214 through the third inclined surface 6231. As shown in fig. 25, 28 and 29, at the time of mold closing, the protruding portion 6211 is located on the left side of the second lock pin 623, and the hooking portion 6221 is located on the right side of the second lock pin 623; when the movable die body 21 and the movable die plate 22 slide rightward until the movable die body 21 is separated from the housing 100, the hitching section 6221 contacts the second locking pin 623, thereby restricting the movable die body 21 from continuing to slide rightward; when the movable die plate 22 continues to slide rightward until the screw portion 41 is separated from the screw hole 101, the fourth inclined surface 6212 forces the second locking pin 623 to slide inside the mounting groove 214 just through the third inclined surface 6231, thereby separating the second locking pin 623 from the hooking portion 6221.

The water valve performs the specific demoulding principle of the motor housing 100 mould: (1) a first step: as shown in fig. 25, the movable die plate 22 is driven to move rightward; since one end of the first locking pin 613 is inserted into the locking groove 213 (as shown in fig. 26), that is, the first locking pin 613 restricts the sliding portion 6111 from sliding in the limiting groove 212, that is, locking between the movable die plate 22 and the movable die body 21 is achieved, so that the movable die plate 22 pulls the movable die body 21 to slide rightward (that is, the movable die body 21 and the driving sleeve 51 are displaced rightward with respect to the forming rod 4) synchronously, and the movable die body 21 is separated from the housing 100 (as shown in fig. 27). In this process, as shown in fig. 26, the first rod body 611 and the first locking pin 613 move rightward along with the movable mold body 21 by a distance, so that the right end of the second rod body 612 is just located at the left side of the first locking pin 613, and the first elastic member 614 forces the first locking pin 613 to automatically slide upward to be separated from the locking groove 213, thereby automatically releasing the locking between the movable mold plate 22 and the movable mold body 21; meanwhile, with reference to fig. 25 and 28, the second locking pin 623 also moves rightward with the movable mold body 21 a distance, so that the second locking pin 623 moves right to contact the hitching section 6221, thereby achieving locking between the movable mold body 21 and the stationary mold body 11.

(2) And a second step of: since the movable mold plate 22 and the movable mold body 21 are unlocked and the movable mold body 21 and the fixed mold body 11 are locked, when the movable mold plate 22 is continuously driven to move rightwards, the movable mold body 21 is kept stationary, namely the movable mold plate 22 and the rack 522 move rightwards relative to the movable mold body 21, so that the driving sleeve 51 is driven to rotate through the gear transmission group 521, the driving sleeve 51 drives the forming rod 4 to rotate, the internal thread of the threaded hole 101 generates a rightwards reaction force on the threaded portion 41, so that the threaded portion 41 (namely the forming rod 4) is pushed to slide rightwards, and the threaded portion 41 is separated from the threaded hole 101.

(3) And a third step of: after the screw portion 41 is separated from the screw hole 101, the movable die plate 22 is continuously driven to move rightward; referring to fig. 25 and 26, when the first rod body 611 and the sliding portion 6111 slide rightward along with the movable die plate 22 until the sliding portion 6111 moves to the right end position of the limit groove 212, the movable die plate 22 and the movable die body 21 are locked again; meanwhile, with reference to fig. 28 and 29, the protrusion 6211 (i.e., the third rod 621) moves rightwards to the position of the second locking pin 623, and the fourth inclined surface 6212 forces the second locking pin 623 to automatically slide into the mounting groove 214 through the third inclined surface 6231, thereby automatically releasing the locking between the second locking pin 623 and the hitching section 6221 (i.e., between the movable mold body 21 and the fixed mold body 11). That is, the movable mold plate 22 continues to move the movable mold body 21 and the molding rod 4 rightward, so that a sufficiently large space is opened between the movable mold body 21 and the stationary mold body 11.

Fourth step: the top plate 31 is controlled to move rightward, thereby driving the ejector pins 32 to move rightward to eject the housing 100 out of the stationary mold body 11.

Since the driving mechanism 5 cannot generate a force on the forming rod 4 in the left-right direction (i.e., the axial direction of the forming rod 4), before the mold is closed, one pressing plate is driven by a mechanical arm to press the forming rods 4 rightward (or other directions to drive the forming rods 4 to slide rightward), so that the forming rods 4 are reset rightward relative to the movable mold body 21 and the driving sleeve 51, that is, the right ends of the forming rods 4 are moved to contact with the first gear 5211, thereby limiting the forming rods 4. Of course, even if this step is omitted, the raw material entering the molding cavity has sufficient pressure during the casting process to automatically push the molding rod 4 to return to the right.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims

1. The water valve executing motor shell mold comprises a fixed mold mechanism, a movable mold mechanism and an ejection mechanism, wherein the movable mold mechanism is arranged on the right side of the fixed mold mechanism in a left-right sliding manner, and a forming cavity for forming a shell is formed between the movable mold mechanism and the fixed mold mechanism; the movable die mechanism is characterized in that mounting holes are formed in positions, corresponding to the threaded holes in the shell, of the movable die mechanism;

the water valve executing motor shell mould further comprises a forming rod and a driving mechanism, wherein the forming rod can slide left and right and is rotatably arranged in the mounting hole, and a threaded part for forming the threaded hole is formed at the left end of the forming rod; the driving mechanism is arranged on the movable mould mechanism and is used for driving the forming rod to rotate, and the forming rod can be connected with the driving mechanism in a left-right sliding manner; when the driving mechanism drives the forming rod to rotate, the internal thread of the threaded hole pushes the threaded part to the right, so that the threaded part is forced to be separated from the threaded hole.

2. The water valve actuator motor housing mold of claim 1, wherein the drive mechanism comprises a drive sleeve and a drive member, the drive sleeve rotatably disposed on the movable mold mechanism, the drive sleeve having a rotational axis coincident with the rotational axis of the forming lever; the driving piece is arranged on the movable mould mechanism and is used for driving the driving sleeve to rotate; the forming rod is connected to the inside of the driving sleeve in a left-right sliding mode, and the forming rod and the driving sleeve cannot rotate relatively.

3. The water valve actuator motor housing mold of claim 2, wherein the movable mold mechanism comprises a movable mold body and a movable mold plate, the movable mold body being slidably disposed on the right side of the stationary mold mechanism and the movable mold plate being slidably disposed on the right side of the movable mold body; the mounting hole is formed in the movable die body, and the driving sleeve is rotatably arranged in the movable die body;

the driving piece comprises a transmission gear set and a rack; the transmission gear set is arranged on the movable die body, the right end of the rack is arranged on the movable die plate, and the rack is connected with the driving sleeve through the transmission gear set; when the movable mould plate slides left and right relative to the movable mould body, the rack drives the driving sleeve to rotate through the transmission gear set.

4. The water valve actuator motor housing mold of claim 3, wherein the drive gear set comprises a first gear, a second gear, a third gear, a first bevel gear, and a second bevel gear; the first gear is coaxially arranged at the right end of the driving sleeve, and the first gear is suitable for limiting the forming rod to slide rightwards; the second gear, the third gear, the first bevel gear and the second bevel gear are all rotatably arranged on the movable die body, the axis of the second gear is parallel to the axis of the first gear, and the second gear is meshed with the first gear; the axis of the third gear is perpendicular to the axis of the first gear, and the third gear is meshed with the rack; the first bevel gear is coaxially arranged with the second gear, the second bevel gear is coaxially arranged with the third gear, and the first bevel gear is meshed with the second bevel gear.

5. The valve actuator motor housing mold of claim 4, wherein the drive gear set further comprises an intermediate gear, wherein each of the first gears on each of the drive sleeves corresponding to the same housing are adapted to intermesh with each other through the intermediate gear, and wherein one of the first gears or one of the intermediate gears is intermeshed with the second gear.

6. The water valve execution motor housing mold of claim 5, wherein the driving piece further comprises a gear box, the gear box is arranged on the movable mold body, and the positions of the gear box corresponding to the driving sleeve and the rack are provided with abdication holes; the right end of the driving sleeve penetrates into the gear box through the corresponding yielding hole, and the second gear, the third gear, the intermediate gear, the first bevel gear and the second bevel gear are rotatably arranged in the gear box.

7. The valve actuator motor housing mold of any one of claims 3-6, further comprising a self-locking mechanism comprising a first locking member and a second locking member, the first locking member and the second locking member being disposed on the movable mold body, the movable mold plate, and the stationary mold mechanism;

When the die is opened, the first locking piece is used for locking the movable die body and the movable die plate, so that the movable die body and the movable die plate slide rightwards at the same time, and the fixed die mechanism, the shell and the forming rod are static; when the movable die body is separated from the shell, the first locking piece is automatically unlocked, and the second locking piece is used for locking the movable die body and the fixed die mechanism, so that the movable die plate continuously slides rightwards relative to the movable die body; when the threaded portion is separated from the threaded hole, the second locking piece is automatically unlocked, and the first locking piece is used for locking the movable die body and the movable die plate, so that the movable die body and the movable die plate slide rightwards simultaneously.

8. The water valve execution motor housing mold of claim 7, wherein the outer side wall of the movable mold body is provided with a limit groove along the left-right direction, and a locking groove is arranged in the limit groove; the first locking piece comprises a first rod body, a second rod body, a first locking pin, a first elastic piece and a first limiting block; the right end of the first rod body is arranged on the movable template, the left end of the first rod body is provided with a sliding part, the sliding part is connected with the limiting groove in a left-right sliding manner, and the sliding part is provided with a containing hole in a penetrating manner; the first locking pin is slidably arranged in the accommodating hole, a first inclined surface is arranged at one end, far away from the movable die body, of the first locking pin, and a first limiting part is arranged on the outer wall of the first locking pin; the first elastic piece is arranged in the accommodating hole and is used for forcing the first locking pin to slide in a direction away from the movable die body; the first limiting block is arranged at the left end of the first rod body and is used for limiting the first limiting part to be separated from the accommodating hole; the left end of the second rod body is arranged on the fixed die mechanism, and the right end of the second rod body is provided with a second inclined plane;

When the mold is closed, the sliding part slides to the left end of the limiting groove, one end of the first locking pin is inserted into the locking groove, and the second rod body is abutted against the other end of the first locking pin, so that the movable mold body and the movable mold plate are locked; when the movable die body and the movable die plate slide rightward at the same time until the movable die body is separated from the shell, the second rod body is separated from the first locking pin, and the first elastic piece forces the first locking pin to slide to be separated from the locking groove, so that the locking between the movable die body and the movable die plate is automatically released; when the threaded part is separated from the threaded hole, the sliding part slides to the right end of the limiting groove, so that the movable die body slides rightwards along with the movable die plate.

9. The water valve actuator motor housing mold of claim 7, wherein the outer sidewall of the movable mold body is provided with a mounting groove; the second locking piece comprises a third rod body, a fourth rod body, a second locking pin, a second elastic piece and a second limiting block; the second locking pin is slidably arranged in the mounting groove, a third inclined surface is arranged at one end, far away from the movable die body, of the second locking pin, and a second limiting part is arranged on the outer wall of the second locking pin; the second elastic piece is arranged in the mounting groove and is used for forcing the second locking pin to slide in a direction away from the movable die body; the second limiting block is arranged on the movable die body and is used for limiting the second limiting part to be separated from the mounting groove; the right end of the third rod body is arranged on the movable template, the left end of the third rod body is provided with a protruding part, and the right side of the protruding part is provided with a fourth inclined plane; the left end of the fourth rod body is arranged on the fixed die mechanism, the right end of the fourth rod body is provided with a hanging part, and the right side of the hanging part is provided with a fifth inclined plane; when the hooking portion slides rightward through the second locking pin position, the fifth inclined surface forces the second locking pin to slide to the inside of the mounting groove through the third inclined surface;

When the mold is closed, the protruding part is positioned at the left side of the second locking pin, and the hanging part is positioned at the right side of the second locking pin; when the movable die body and the movable die plate slide rightwards until the movable die body is separated from the shell, the hanging part is contacted with the second locking pin, so that the movable die body is limited to slide rightwards continuously; when the movable template continues to slide rightwards until the threaded portion is separated from the threaded hole, the fourth inclined surface forces the second locking pin to slide to the inside of the mounting groove just through the third inclined surface, so that the second locking pin is separated from the hanging portion.

10. The water valve execution motor housing mold of claim 1, wherein the fixed mold mechanism comprises a fixed mold body, and a runner for communicating with the molding cavity and a through hole for communicating with the molding cavity are arranged on the fixed mold body in a penetrating manner;

the ejection mechanism comprises a top plate and an ejector rod, and the top plate can be arranged on the left side of the fixed die body in a left-right sliding manner; the ejector rod can slide left and right and is arranged in the through hole, and the left end of the ejector rod is arranged in the top plate.