In-mold continuous driving demolding device

Abstract

The utility model discloses an in-mold continuous driving demolding device. The in-mold continuous driving demolding device comprises an ejector pin plate, an ejector pin mechanism, an inward shrinkage mechanism and an inclined ejection mechanism, the ejector plate and ejector mechanism is arranged at the rear position of the rear mold plate and comprises an ejector plate, an ejector, a reset core and a reset sleeve; a movable pin used for limiting the ejector pin is installed at the rear end of the reset core, and a pin groove allowing the movable pin to move outwards is formed in the front end of the reset sleeve. The internal shrinkage mechanism comprises a head slide part and a tail slide part, and the head slide part and the tail slide part are respectively arranged on the side surface of the rear mold insert in a sliding connection manner by adopting a tapered wedge mechanism; the angle ejector mechanism comprises four angle ejector rods which are distributed at four corners, each angle ejector rod sequentially penetrates through the rear mold plate and the push plate to the front end of the rear mold insert, and an angle core body is arranged at the front end part of each angle ejector rod. The novel demolding device is novel and ingenious in structural design, demolding operation is simple, stable and efficient, and the effective demolding effect that multiple areas are continuous and do not interfere with one another is achieved in a narrow space.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an in-mold continuous driving demoulding device. Background Art

[0002] Shower heads are commonly used bathroom products in the home. Shower heads are produced using a dedicated injection molding mold. The mold generally includes a movable mold plate, a fixed mold plate, a movable mold core, a fixed mold core, a slider and other parts. During molding, all parts are first molded together to form a mold cavity. Then, molten plastic is injected into the mold cavity through a pouring system. After the steps of pressure holding, shrinking, cooling and other steps until solidification, the mold is finally opened to separate the molded product. At present, in order to facilitate the demoulding operation, the structure of the molded shower head body is simplified as much as possible, especially avoiding the internal undercut structure, which greatly limits the diverse presentation of the integrated structure of the shower head body.

[0003] At present, ordinary shower heads are round in shape, with a round head and a round assembly hole formed on the round head. With the improvement of living standards and people's pursuit of product innovation, shower heads with square bodies have appeared. The square bodies have square heads, with a round assembly hole designed on the square heads, forming a connecting part that plays a transitional role between the square and the round and constitutes an internal undercut structure. The current structural design of the shower body cannot be formed in one go with the existing mold, and must be formed in parts and then assembled into one. In view of this, the applicant of this case conducted in-depth research on the above-mentioned problems, and proposed a shower body mold that can achieve one-time molding of a heterosexual shower body with an internal undercut structure, and accordingly proposed an in-mold continuous drive demolding device, which resulted in this case. Utility Model Content

[0004] The utility model aims to provide an in-mold continuously driven demoulding device, which has a novel and concise structural design and can achieve a continuous and effective demoulding effect of the inverted structure at the head, tail and four corners of the shower body.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A mold-in-mold continuous drive demoulding device is arranged between the push plate and the rear mold plate of the mold, and the rear mold plate is provided with a rear mold insert penetrating the push plate; the device comprises an ejector mechanism, an inner retracting mechanism and an inclined ejector mechanism; the ejector mechanism comprises an ejector plate, an ejector, a reset core and a reset sleeve; the reset sleeve is arranged on the rear mold plate, the reset core is movably arranged in the reset sleeve, the front end of the reset core extends out of the reset sleeve and abuts against the push plate; the rear end of the ejector is arranged on the ejector plate and the front end extends into the reset core from the rear end; the reset core is provided with an active pin for limiting the ejector, and the reset sleeve is provided with a The pin groove is used for the outward displacement of the movable pin; the retracting mechanism includes a head position piece and a tail position piece, which are respectively slidably connected on the side of the rear mold insert by an inclined wedge mechanism, and the rear ends of the head position piece and the tail position piece are restrained and limited by a push plate; the inclined ejector mechanism includes four inclined ejector rods distributed at four corners, and the rear end of each inclined ejector rod is supported on the ejector pin plate in a manner that can be adjusted toward the center, and each inclined ejector rod passes through the rear mold plate and the push plate in sequence to the front end of the rear mold insert, and the front end of each inclined ejector rod is provided with an angle core body.

[0007] The rear end of the reset sleeve is provided with a necking section for limiting the reset core, and the front end of the ejector pin extends into the reset core through the necking section.

[0008] The matching part between the ejector pin and the movable pin adopts a tapered structure with a reduced diameter toward the front direction, and the matching part between the movable pin and the pin groove adopts a tapered structure with a reduced diameter toward the rear direction.

[0009] The reset core is provided with a side groove for setting a movable pin, the movable pin is provided with an adjustment limit hole, and a limit rod extending into the adjustment limit hole is provided in the side groove.

[0010] The pin groove is a tapered groove formed at the front end opening of the reset sleeve. The front end of the reset sleeve is stacked with a fixing sleeve, which is sleeved on the reset core. The front end of the reset core is formed with a flange that resists the fixing sleeve.

[0011] The rear end of the head position piece is horizontally arranged, and a horizontal limit portion is formed on the corresponding push plate; the rear end of the tail position piece is tilted forward outward, and an inclined limit portion is formed on the corresponding push plate.

[0012] The inclined ejector rod is sleeved with an inclined ejector guide block, which is correspondingly locked on the push plate.

[0013] The ejector plate is provided with an adjusting slot for the rear end of the rod to be adjusted toward the center.

[0014] The ejector plate comprises an ejector bottom plate and an ejector panel which are stacked on each other, and the adjusting groove is formed on the ejector panel.

[0015] After adopting the above scheme, the novel in-mold continuous drive demoulding device has the following beneficial effects compared with the prior art: the novel adopts the in-mold continuous drive demoulding method to realize the continuous and effective demoulding of the head, tail and four corners of the shower body. The heads of the head position piece and the tail position piece are respectively placed in the head and tail inner undercut areas of the shower body, and the four corner cores are respectively placed in the four corners of the shower body. During demoulding, after the front and rear templates are opened, the ejector plate is pushed forward to drive the ejector mechanism to continuously perform two stages of demoulding operations:

[0016] In the first stage of operation, the ejector is limited by the movable pin, driving the reset core forward, thereby driving the push plate to move forward, and correspondingly, the rear mold insert moves backward, driving the head position piece and the tail position piece to retract inward, and the heads of the head position piece and the tail position piece are respectively moved out of the head inner undercut area and the tail inner undercut area of ​​the shower body, thereby realizing the demoulding of the head and tail inner undercut structure of the shower body;

[0017] In the second operation, the ejector plate continues to move forward. As the movable pin moves forward to the pin groove with the reset core, the movable pin releases the limit on the ejector. Driven by the ejector plate, the ejector passes through the reset core and continues to move forward, while the push plate remains stationary. Driven by the ejector plate, the inclined ejector rod tilts forward relative to the rear template and the push plate, and the four groups of corner cores move forward and contract inward, thereby moving the four groups of corner cores out from the undercut areas in the four corners, realizing the four-corner inclined ejection demoulding and ejecting the shower product.

[0018] The novel demoulding device has a novel and ingenious structural design, and the demoulding operation is simple, stable and efficient, and an effective demoulding effect of continuous multi-zone non-interference can be achieved in a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the novel demoulding device;

[0020] Figure 2 yes Figure 1 Exploded view;

[0021] Figure 3 It is another structural schematic diagram of the novel demoulding device;

[0022] Figure 4 This is a cross-sectional view of the new demoulding device. Figure 1 ;

[0023] Figure 5 for Figure 4 Enlarged view of part A;

[0024] Figure 6 for Figure 4 Enlarged view of part B;

[0025] Figure 7 This is a cross-sectional view of the new demoulding device. Figure 2 ;

[0026] Figure 8 The present invention is a structural schematic diagram of a shower product which is demoulded by using the novel demoulding device.

[0027] Description of symbols

[0028] Push plate 200, first limiting portion 202, second limiting portion 203, rear template 300, long strip hole 302, rear mold core 500, rear mold insert 600, shower body 900, circular hole 901, side inner undercut area 902, head inner undercut area 903, tail inner undercut area 904, four corner inner undercut areas 905;

[0029] Ejector mechanism 22, ejector plate 220, ejector plate surface 2201, ejector bottom plate 2202, adjusting groove 2203, ejector 221, reset core 222, side groove 2221, flange 2222, reset sleeve 223, pin groove 2231, necking section 2232, inner retracting mechanism 23, head position member 231, inclined wedge mechanism 2311, tail position member 232, inclined wedge mechanism 2321, movable pin 224, adjusting hole 2241, inclined ejector mechanism 24, inclined ejector rod 241, angle core body 2411, inclined ejector guide block 2412, inclined ejector seat 2413, limiting rod 225, fixing kit 226. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] This case involves a continuously driven demoulding device 2 in a mold, such as Figure 1-7 As shown, it is arranged between the push plate 200 and the rear mold plate 300 of the mold, the push plate 200 is provided with a rear mold core 500, and the rear mold plate is provided with a rear mold insert 600 extending into the rear mold core 500. The push plate 200 and the rear mold plate 300 of the mold are arranged front and back, that is, corresponding to Figure 1 When the mold is in the mold-closing state, the rear mold core 500 and the rear mold insert 600 form the rear half of the mold cavity.

[0032] The demoulding object of the present invention is a shower body 900. Figure 8 As shown, the overall shape is a square structure, and a circular hole 901 is formed at the water outlet position through an integrally formed inner undercut edge. The integrally formed inner undercut edge is a closed loop structure with irregular size. The inner undercut edge is divided into three groups of eight areas, one group is the two side inner undercut areas 902 corresponding to the two side edges, the second group is the head inner undercut area 903 and the tail inner undercut area 904 on the head and tail sides, and the third group is the four corner inner undercut areas 905 corresponding to the four corners. The novel in-mold continuous drive demoulding device 2 is used to realize the continuous and effective demoulding effect of the head inner undercut area 903 and the tail inner undercut area 904, as well as the four corner inner undercut areas 905 of the shower body 900.

[0033] The novel in-mold continuous driving demoulding device 2 is as follows Figure 1-7 As shown, it includes an ejector mechanism 22, an inner retracting mechanism 23 and an inclined ejector mechanism 24. The ejector mechanism 22 is arranged at the rear position of the rear template 300, and includes an ejector plate 220, an ejector 221, a reset core 222 and a reset sleeve 223. The reset sleeve 222 is arranged on the rear template 300 in a manner extending forward and backward. The reset core 222 is movably arranged in the reset sleeve 223, and the two are preferably clearance-matched, which is conducive to the smooth movement of the reset core 222. The front end of the reset core 222 extends out of the reset sleeve 223 and abuts against the push plate 200. The rear end of the ejector 221 is fixed on the ejector plate 220, and the front end of the ejector 221 extends into the rear end of the reset core 222.

[0034] A movable pin 224 for limiting the ejector 221 is installed near the rear end of the reset core 222, and a pin groove 2231 for the movable pin 224 to move outward is provided at the front end of the reset sleeve 223. When the movable pin 224 is located in the reset sleeve 223 and avoids the position of the pin groove 2231, the movable pin 224 is restricted in a retracted state, and the movable pin 224 has a limiting effect on the ejector 221. When the ejector plate 220 drives the ejector 221 to move forward, the reset core 222 is driven to move forward synchronously through the movable pin 224, and finally the reset core 222 drives the push plate 200 to move forward, which is the first stage. When the reset core 222 moves forward to the relative position between the movable pin 224 and the pin groove 2231, the movable pin 224 is pushed outward to move into the pin groove 2231 with the help of the supporting force of the ejector pin 221, thereby releasing the limiting effect of the movable pin 224 on the ejector pin 221. At this time, the second stage is entered. During the process of the ejector plate 220 driving the ejector pin 221 to continue to move forward, the reset core 222 remains stationary, that is, the push plate 200 remains stationary.

[0035] The inner retracting mechanism 23 includes a head position piece 231 and a tail position piece 232. The head position piece 231 and the tail position piece 232 are arranged opposite to each other on the rear mold insert 600. A head core is formed on the head position piece 231, and a tail core is formed on the tail position piece 232. The head position piece 231 is slidably connected to the side of the rear mold insert 600 by an inclined wedge mechanism 2311, and the tail position piece 232 is slidably connected to the side of the rear mold insert 600 by an inclined wedge mechanism 2321. With the rear mold insert 600 as the center position, the inclined wedge mechanism 2311 connected to the head position piece 231 is inclined from the back to the front (i.e., toward the center); the inclined wedge mechanism 2321 connected to the tail position piece 232 is also inclined from the back to the front (i.e., toward the center). The rear ends of the head position member 231 and the tail position member 232 are set to be abutted by the push plate 200. Specifically, the push plate 200 is provided with a first limiter 202 for abutting against the rear end of the head position member 231 and a second limiter 203 for abutting against the rear end of the tail position member 232. The first limiter 202 and the second limiter 203 are specifically designed as wear-resistant block structures.

[0036] The lift mechanism 24 includes four lift rods 241 distributed at four corners. The rear end of each lift rod 241 is supported on the ejector plate 220 in a manner that it can be adjusted toward the center. In a specific implementation, the ejector plate 220 is provided with four strip-shaped adjustment slots 2203 extending toward the center, and the rear end of each lift rod 241 is supported in the adjustment slot 2203 and can be moved and adjusted in the adjustment slot 2203. Each lift rod 241 passes through the rear mold plate 300, the push plate 200 and the front end of the rear mold insert 600 in sequence, and the front end of each lift rod 241 is provided with an angle core 2411. In order to facilitate the movable adjustment of the lift rod 241, the through hole of the lift rod 241 passing through the rear mold plate 300 is a long strip hole 302 extending toward the center. In addition, in order to facilitate the stability of the tilting action of the tilting rod 24, a tilting guide block 2412 is sleeved on the tilting rod 24, and the tilting guide block 2412 is correspondingly locked on the push plate 200.

[0037] After the shower body 900 is formed by the mold, the head core of the head position member 231 and the tail core of the tail position member 232 are respectively located in the head inner undercut area 903 and the tail inner undercut area 904 of the shower body 900, and the four corner cores 2411 are respectively located in the four corner inner undercut areas 905 of the shower body 900. The novel device adopts the in-mold continuous drive demoulding method to realize the continuous and effective demoulding effect of the head, tail and four corner inner undercut structures of the shower body 900. During demoulding, after the front and rear templates are opened, the relevant driving mechanism drives the ejector plate 220 to move forward, and the ejector mechanism 22, the inner retracting mechanism 23 and the inclined ejector mechanism 24 cooperate with each other to continuously perform two-stage demoulding operations:

[0038] In the first stage of operation, the ejector plate 220 drives the ejector 221 to move forward. The ejector 221 is limited by the movable pin 224 and synchronously drives the reset core 222 to move forward, thereby driving the push plate 200 to move forward. Since the rear template 300 remains stationary, the rear mold insert 600 on the rear template 300 moves relatively backward. Under the cooperation of the inclined wedge mechanism 2311 / 2321, the head position member 231 and the tail position member 232 are driven to retract inward, and the head core of the head position member 231 and the tail core of the tail position member 232 are respectively moved out of the head inner undercut area 903 and the tail inner undercut area 904 of the shower body 900, thereby realizing the demoulding operation of the head and tail inner undercut areas of the shower body 900;

[0039] It should be noted that, in the first stage, when the ejector plate 220 is pushed forward, the four inclined ejector rods 241 are pushed forward synchronously. Since the push plate 200 drives the rear mold core 500 and the shower body 900 thereon to be pushed forward synchronously, the relative positions between the four inclined ejector rods 241 and the shower body 900 remain unchanged in the first stage.

[0040] In the second stage of operation, the ejector plate 220 continues to move forward, and the movable pin 224 moves forward to the pin groove 2231 along with the reset core 222. The movable pin 224 releases the limit on the ejector 211. The ejector 211 passes through the reset core 222 and continues to move forward under the drive of the ejector plate 220. At this time, the push plate 200 remains stationary; the four inclined ejector rods 241 are driven by the ejector plate 220 and tilted forward relative to the rear template 300 and the push plate 200, and the four groups of corner core bodies 2411 move forward and shrink inward, thereby the four groups of corner core bodies 2411 move out from the four corner inner undercut areas 905, so that the four corner inclined ejector demoulding is realized and the shower body is ejected.

[0041] Preferably, a necking section 2232 is provided at the rear end of the reset sleeve 223 for limiting the reset core 222 and guiding the ejector pin 221 . The front end of the ejector pin 221 extends into the reset core 222 via the necking section 2232 .

[0042] Preferably, the matching part between the ejector pin 221 and the movable pin 224 adopts a tapered structure with a reduced diameter toward the front direction, and the matching part between the movable pin 224 and the pin slot 2231 adopts a tapered structure with a reduced diameter toward the rear direction. The ejector pin 211 pushes the reset core 222 forward, and when the movable pin 224 moves forward to the pin slot 2231 along with the reset core 222, the movable pin 224 is automatically translated into the pin slot 2231 by means of the thrust of the ejector pin 211 and the guiding effect of the tapered structure, and the limiting effect on the ejector pin 211 is automatically released. Conversely, when the reset core 222 is shifted backward and reset, similarly, by means of the guiding effect of the tapered structure, the movable pin 224 automatically retracts and restores the limiting effect on the ejector pin 211.

[0043] Preferably, the reset core 222 is provided with a side groove 2221 for the movable pin 224 to be set, the movable pin 224 is provided with an adjustment limit hole 2241, and the side groove 2221 is provided with a limit rod 225 extending into the adjustment limit hole 2241. By adjusting the cooperation between the limit hole 2241 and the limit rod 225, the movable pin 224 can move freely within the side groove 2221 within a limited range, thereby achieving the limiting or releasing effect on the ejector pin 211.

[0044] Preferably, the pin groove 2231 is a conical groove formed at the front end opening of the reset sleeve 223, the front end of the reset sleeve 223 is stacked with a fixing kit 226, the fixing kit 226 is sleeved on the reset core 222, and the front end of the reset core 222 is formed with a flange 2222 that resists the fixing kit 226.

[0045] Preferably, the undercut area 903 in the head of the shower body is horizontal, the rear end of the corresponding head position piece 231 is horizontally set, and the corresponding first limiter 202 is a horizontal limiter; in this way, when demoulding, the head position piece 231 shrinks horizontally to complete the head demoulding operation. The undercut area 904 in the tail of the shower body is inclined, the rear end of the corresponding tail position piece 232 is tilted forward and outward, and the corresponding second limiter 203 is an inclined limiter; in this way, when demoulding, the tail position piece 232 shrinks obliquely to complete the tail demoulding operation.

[0046] Preferably, the ejector plate 220 includes an ejector panel 2201 and an ejector bottom plate 2202 stacked on each other, and the adjustment groove 2203 is formed on the ejector panel 2201. An inclined ejector seat 2413 is movably installed in the adjustment groove 2203, and the rear end of the inclined ejector rod 241 is arranged on the inclined ejector seat 2413, and the inclined ejector rod 241 can flexibly adjust the inclination angle by means of the inclined ejector seat 2413.

[0047] The above description is only the preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. An in-mold continuous drive demoulding device, characterized in that: The device is arranged between the push plate and the rear template of the mold, and the rear template is provided with a rear mold insert penetrating the push plate; the device includes an ejector mechanism, an inner retracting mechanism and an inclined ejector mechanism; the ejector mechanism includes an ejector plate, an ejector, a reset core and a reset sleeve; the reset sleeve is arranged on the rear template, the reset core is movably arranged in the reset sleeve, the front end of the reset core extends out of the reset sleeve and abuts against the push plate; the rear end of the ejector is arranged on the ejector plate and the front end extends into the reset core from the rear end; a movable pin for limiting the ejector is installed on the reset core, and a movable pin for the movable pin to move outward is arranged in the reset sleeve The pin groove of the position; the retracting mechanism includes a head position piece and a tail position piece, which are respectively slidably connected on the side of the rear mold insert by an inclined wedge mechanism, and the rear ends of the head position piece and the tail position piece are supported and limited by a push plate; the inclined ejector mechanism includes four inclined ejector rods distributed at four corners, and the rear end of each inclined ejector rod is supported on the ejector pin plate in a manner that can be adjusted toward the center, and each inclined ejector rod passes through the rear mold plate and the push plate in turn to the front end of the rear mold insert, and the front end of each inclined ejector rod is provided with an angle core body.

2. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The rear end of the reset sleeve is provided with a necking section for limiting the reset core, and the front end of the ejector pin extends into the reset core through the necking section.

3. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The matching part between the ejector pin and the movable pin adopts a tapered structure with a reduced diameter toward the front direction, and the matching part between the movable pin and the pin groove adopts a tapered structure with a reduced diameter toward the rear direction.

4. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The reset core is provided with a side groove for setting a movable pin, the movable pin is provided with an adjustment limit hole, and a limit rod extending into the adjustment limit hole is provided in the side groove.

5. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The pin groove is a tapered groove formed at the front end opening of the reset sleeve. The front end of the reset sleeve is stacked with a fixing sleeve, which is sleeved on the reset core. The front end of the reset core is formed with a flange that resists the fixing sleeve.

6. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The rear end of the head position piece is horizontally arranged, and a horizontal limit portion is formed on the corresponding push plate; the rear end of the tail position piece is tilted forward outward, and an inclined limit portion is formed on the corresponding push plate.

7. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The inclined ejector rod is sleeved with an inclined ejector guide block, which is correspondingly locked on the push plate.

8. The in-mold continuous drive demoulding device according to claim 1, characterized in that: The ejector plate is provided with an adjusting slot for the rear end of the rod to be adjusted toward the center.

9. The in-mold continuous drive demoulding device according to claim 8, characterized in that: The ejector plate comprises an ejector bottom plate and an ejector panel which are stacked on each other, and the adjusting groove is formed on the ejector panel.

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