CN112829224A - Injection mold and injection molding method for injection molding product with inclined handle - Google Patents

Abstract

The invention provides an injection mold and an injection molding method of an injection molding product with an inclined handle, wherein the injection mold comprises a first front mold component, a second front mold component and a rear mold component which are arranged in sequence from front to back and can move relatively, and a mold core positioned between the second front mold component and the rear mold component; the mold core consists of a rear mold core and a front mold core, and the rear mold core and the front mold core jointly form a body cavity for injection molding a product body; but preceding mold core is formed by the concatenation of a plurality of side direction slip assembly preceding mold core pieces on back mould subassembly, and a plurality of preceding mold core pieces enclose jointly and close the chamber that inserts that forms the slope, be equipped with the slider that leads that the slope set up on the first preceding mould subassembly, it is equipped with slidable slider core on the slider to lead, set up the direction jack that corresponds the chamber that inserts on the second preceding mould subassembly, the slider core passes the direction jack and inserts to the intracavity that inserts of mold core to constitute the handle die cavity that is used for the handle of moulding plastics jointly with preceding mold core. The injection molding product with the inclined handle can be well molded.

Description

Injection mold and injection molding method for injection molding product with inclined handle

Technical Field

The invention relates to the field of injection molds, in particular to an injection mold and an injection molding method of an injection molding product with an inclined handle.

Background

An injection mold is a tool for producing plastic products and also a tool for giving the plastic products complete structure and precise dimensions. Injection molding by means of an injection mold is a processing method used in mass production of some parts having complicated shapes. The method comprises the specific steps of injecting heated and melted plastic into a mold cavity from an injection molding machine at high pressure, and cooling and solidifying to obtain a formed product.

Fig. 1 shows an injection-molded product 100 with an inclined handle, in particular, a lower housing of a fascia gun for vena cava clearance; this injection moulding product 100 has product body 101 and forms on product body 101 and the hollow handle 102 of slope setting, and when forming this product through moulding plastics, the structure that current injection mold realized is comparatively complicated, and the drawing of patterns qualification rate is on the low side. Therefore, further improvements are needed.

Disclosure of Invention

Therefore, the invention provides an injection mold of an injection product with an inclined handle and an injection molding method for injection molding by using the injection mold, which can well improve the problems.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

an injection mold for an injection molded product with an inclined handle, for injection molding the injection molded product shown in fig. 1; the mold comprises a first front mold component, a second front mold component and a rear mold component which are arranged in sequence from front to back and can move relatively, and a mold core positioned between the second front mold component and the rear mold component; the mold core consists of a rear mold core and a front mold core, and the rear mold core and the front mold core jointly form a body cavity for injection molding a product body; but preceding mold core is formed by the concatenation of a plurality of lateral sliding assemble preceding mold core pieces on back mould subassembly, and a plurality of preceding mold core pieces enclose jointly and close the chamber that inserts that forms the slope, be equipped with the slider that leads that a slope set up on the first preceding mould subassembly, it is equipped with a slidable slider core on the slider to lead, set up the direction jack that corresponds the chamber that inserts on the preceding mould subassembly of second, the slider core passes the direction jack and inserts to the chamber that inserts of mold core to constitute the handle die cavity that is used for the handle of moulding plastics jointly with preceding mold core.

Furthermore, a positioning groove is formed in the position, corresponding to the insertion cavity, of the rear mold core, a positioning convex part matched with the positioning groove is formed at the rear end of the slider core, and when the slider core is inserted into the insertion cavity, the positioning convex part is inserted into the positioning groove in a positioning mode to achieve positioning fit.

Furthermore, a through hole is formed in a positioning groove of the rear mold core, a positioning pin is assembled in the through hole, a positioning groove hole is further sunken in a positioning convex part of the slider core, and when the positioning convex part is inserted into the positioning groove in a positioning mode, the positioning pin is inserted into the positioning groove hole of the positioning convex part at the same time.

Furthermore, be formed with spacing step on the slider core, the mould subassembly includes preceding template and the fixed quiet mould courage that sets up in the rear end of preceding template and correspond the mold core before the second, all set up the direction jack that corresponds the chamber of inserting on preceding template and the quiet mould courage, and the aperture of the direction jack on the quiet mould courage is less than the aperture of the direction jack of preceding template, the slider core inserts to the intracavity and when targetting in place, the spacing step butt of slider core realizes spacingly on the quiet mould courage.

Further, a front-back linear distance of the slider core from the insertion cavity is defined as L1, the die further comprises a limit button machine, the limit button machine comprises a limit screw and a limit slotted hole formed in the first front die assembly, the limit screw is accommodated in the limit slotted hole and penetrates through the first front die assembly to be fixed on the second front die assembly, in a die assembly state, a distance of L1 is formed between a nut of the limit screw and the bottom of the limit slotted hole, when the first front die assembly moves forwards relative to the second front die assembly by the distance of L1, the slider core is separated from the insertion cavity, and the first front die assembly moves forwards continuously to drive the second front die assembly to move forwards synchronously through abutting fit of the nut of the limit screw and the limit slotted hole.

Further, the definition the slider core breaks away from insert the front and back linear distance in chamber be L1, and the mould still includes the order machine of detaining, the order is detained the machine and is included fixing base, preceding gag lever post and back gag lever post, the fixing base is fixed to be set up on the second front mould subassembly to set up two sets of holes of stepping down that link up from beginning to end, the front end of preceding gag lever post is fixed in on the first front mould subassembly, the rear end of back gag lever post is fixed in the back mould subassembly, under the compound die state, the front end of back gag lever post is worn to locate one of them group of the fixing base and is stepped down downthehole and fixed with fixing base looks lock joint, the rear end of preceding gag lever post passes another group of fixing base and extends L1 distance backward, the rear end of preceding gag lever post is formed with and is used for triggering the trigger to remove the trigger part of gag lever post and fixing base looks lock joint.

Furthermore, the product body is further provided with a back-off structure, the mold further comprises a back-off forming assembly, the back-off forming assembly comprises a sliding block and an inclined guide post, a yielding notch penetrating through the body cavity is formed in the outer peripheral side of the rear mold core, the sliding block is provided with a back-off forming structure used for forming the back-off structure and an inclined guide groove hole used for inclined guide matching, the back-off forming structure and the inclined guide groove hole can be assembled on the rear mold assembly in a laterally sliding mode, the front end of the inclined guide post is fixed on the second front mold assembly, the rear end of the inclined guide post is inserted into the inclined guide groove hole of the sliding block to achieve inclined guide matching, the second front mold assembly is close to or far away from the rear mold assembly, and the sliding block is driven to be inserted into the yielding notch through the inclined guide matching of the inclined guide post and the inclined guide groove hole so that the back-off forming structure is in place or the sliding block is driven.

Furthermore, the end part of the hollow handle is also provided with a bayonet structure, the mould also comprises a bayonet forming assembly, and the bayonet forming assembly is provided with a first bayonet forming unit; the first bayonet forming unit is used for preparing a bayonet structure positioned in the inclined direction of the front end part of the sliding block core, the first bayonet forming unit comprises a first sliding block, a connecting rod, a telescopic driving device and a limiting rod, the first sliding block is provided with an inverted buckle forming structure used for forming an inverted buckle structure and an inclined guide groove used for inclined guide matching, the connecting rod is arranged laterally, a first end of the connecting rod is provided with an inclined guide convex rib, the inclined guide convex rib is matched in the inclined guide groove of the first sliding block to realize inclined guide matching, the telescopic driving device is embedded in the second front mold component, a telescopic driving end of the telescopic driving device is connected with a second end of the connecting rod to drive the first sliding block to be switched between an in-position and a dislocation position of the inverted buckle forming structure through the connecting rod, a limiting notch is formed in the position of the front end part of the sliding block core in a staggered mode, and the front end of the limiting, the rear end of the connecting rod corresponds to the limiting notch of the connecting rod and is inserted into the limiting notch of the connecting rod to limit the action of the connecting rod when the die is closed.

Further, the bayonet forming assembly is also provided with a second bayonet forming unit; the second bayonet forming unit is used for preparing a bayonet structure which is staggered with the front end part of the sliding block core, the second bayonet forming unit comprises a second sliding block and a wedge block, the second sliding block is provided with a bayonet forming structure for forming the bayonet structure and an inclined guide groove for inclined guide fit, the front end of the wedge block is fixed on the first front die assembly, the rear end of the wedge block is inclined guide fit with the second sliding block, and the first front die assembly moves close to or far away from the second front die assembly and drives the second sliding block to switch between the in-position and the out-of-position of the bayonet forming structure through the wedge block.

The invention provides an injection molding method of an injection molding product with an inclined handle, wherein the injection molding product is provided with a product body and a hollow handle which is formed on the product body and is obliquely arranged, and the injection molding method comprises the following steps:

a1, providing the injection mold of the front mold slide block large-stroke sequential mold opening mechanism, closing the mold, inserting the slide block core into the insertion cavity to form a handle cavity, and communicating the body cavity with the handle cavity to obtain an injection cavity of a product;

a2, injecting plastic liquid into the injection molding cavity, and cooling and solidifying to obtain a molded injection molding product;

a3, moving the first front mould assembly forward until the slide block core is driven to be separated from the insertion cavity;

a4, synchronously moving the first front mold assembly and the second front mold assembly forwards to make the demolding space of the product;

a5, driving the front mold core blocks to move away from each other for abdicating;

and A6, ejecting the product through the ejector pin of the rear die assembly to realize the demoulding of the product.

Through the technical scheme provided by the invention, the method has the following beneficial effects:

the injection mold that this scheme provided, realization that can be fine has the injection moulding of the injection moulding product of slope handle, and mould simple structure, and the drawing of patterns qualification rate is high.

Drawings

FIG. 1 is a schematic view of an injection molded product with a sloped handle;

FIG. 2 is a schematic perspective view of an injection mold according to an embodiment;

FIG. 3 is a schematic structural view of a front mold portion of an injection mold according to an embodiment;

FIG. 4 is a schematic structural view of a rear mold portion of an injection mold according to an embodiment; wherein the partial structure is hidden;

FIG. 5 is a side view of the injection mold in a closed state in the embodiment;

FIG. 6 is a sectional view of the injection mold in a closed state in the embodiment;

FIG. 7 is a sectional view showing the injection mold according to the embodiment at the time of injection molding of a product;

FIG. 8 is a side view of the injection mold of the embodiment during mold opening; in which the internal structure is hidden;

FIG. 9 is a first cross-sectional view of the injection mold of the embodiment during mold opening;

FIG. 10 is a sectional view of the injection mold of the embodiment shown in the second embodiment during the mold opening process;

FIG. 11 is a sectional view showing the injection mold in the mold opening process in the third embodiment;

FIG. 12 is a schematic view showing an internal structure of the injection mold in a mold clamping state according to the embodiment;

FIG. 13 is a first schematic side view of an exemplary injection mold; (ii) a Wherein, a first fixed seat of the first sequential button sewing machine is hidden;

FIG. 14 is a schematic side view of a second embodiment of an injection mold; wherein, a second fixed seat of the second sequential button machine is hidden;

FIG. 15 is a side view showing a slider core in the embodiment;

FIG. 16 is a schematic perspective view showing a slider core in the embodiment.

Detailed Description

To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

Meanwhile, the directions of front, rear, left, right, and the like referred to in the present embodiment are only used as a reference for one direction, and do not represent directions in actual use.

The invention will now be further described with reference to the accompanying drawings and detailed description.

The injection mold of the injection product with the inclined handle provided by the embodiment is used for injecting the injection product 100 shown in fig. 1; referring to fig. 2 to 16, the injection mold includes a first front mold assembly 11, a second front mold assembly 12 and a rear mold assembly 13 which are arranged in sequence from front to rear and can move relatively, and a mold core located between the second front mold assembly 12 and the rear mold assembly 13; the mold core consists of a rear mold core 21 and a front mold core, and the rear mold core 21 and the front mold core jointly form a body cavity 201 for the injection molding product body 101; specifically, the first front mold assembly 11 includes a heat insulation plate 111, a face plate 112 and a heat circulation plate 113 which are sequentially arranged from the front end to the rear end; the rear mold assembly 13 includes a base 132, a rear mold plate 131 fixedly disposed on the base 132, and a front ejector plate 133 and a rear ejector plate 134 movably disposed between the base 132 and the rear mold plate 131 in a forward and backward direction, the front ejector plate 133 and the rear ejector plate 134 being connected with ejector pins (not shown) that pass through the rear mold plate 131 and the rear mold core 21 into the body cavity 201 to eject the injection molded product 100 at the time of demolding. Of course, in other embodiments, the specific structure of the first front mold assembly 11 and the rear mold assembly 13 is not limited thereto.

The front mold core is formed by splicing a plurality of front mold core blocks 22 which can be laterally assembled on the rear mold component 13 in a sliding manner, in the embodiment, the number of the front mold core blocks 22 is two (certainly, the number of the front mold core blocks can be more than two), and the two front mold core blocks 22 can slide in the direction vertical to the paper surface in the attached drawing 6; the two front mold core blocks 22 together enclose an inclined insertion cavity.

Specifically, the lateral direction in this embodiment refers to any direction in a plane perpendicular to the front-back direction, such as the front-back side or the left-right side. That is, in the three-axis coordinate system of X, Y, Z, if the front-rear direction is the Z-axis direction, the lateral direction is either the X-axis or the Y-axis in the plane.

The first front mold assembly 11 is provided with a guide sliding block 32 which is obliquely arranged, specifically, the first front mold assembly 11 is fixed with a T-shaped block 31, and the guide sliding block 32 is fixed on the T-shaped block 31. The slide guide 32 is provided with a slidable slide core 33, specifically, as shown in fig. 15, the front end of the slide core 33 is provided with an inverted-j-shaped chute 333, and the slide guide 32 is slidably engaged with the inverted-j-shaped chute 333 of the slide core 33.

A guide jack (not shown) corresponding to the insertion cavity is formed in the second front mold component 12, the slider core 33 passes through the guide jack and is inserted into the insertion cavity of the mold core, and the slider core 33 and the front mold core jointly form a handle cavity 202 for an injection molding handle, and the handle cavity 202 is a cavity part left after the slider core 33 is inserted into the insertion cavity. In this manner, the handle cavity 202 and the body cavity 201 are connected and together constitute an injection mold cavity 200 for molding the injection molded product 100 shown in fig. 1.

The embodiment also provides an injection molding method of an injection molded product with an inclined handle, and the injection molded product 100 shown in FIG. 1 is prepared by adopting the injection mold. The method comprises the following steps:

a1, providing the injection mold of the injection product with the inclined handle, closing the mold, inserting the slide block core 33 into the insertion cavity to form a handle cavity 202, and communicating the body cavity 201 with the handle cavity 202 to obtain an injection cavity 200 of the product; this state is shown in fig. 6.

A2, injecting plastic liquid into the injection mold cavity 200, and cooling and solidifying to obtain the molded injection product 100, as shown in fig. 7.

A3, advancing the first front mold assembly 11 until bringing the slider core 33 out of the insertion cavity, as shown in fig. 8 and 9;

further, a straight distance L1 from the front and rear of the slider core 33 from the insertion cavity is defined, and in this step, the first front mold assembly 11 is advanced relative to the second front mold assembly 12 by a distance L1.

In the process of advancing the first front mold assembly 11, the second front mold assembly 12 is not moved, so that the sliding block core 33 can only move along the inclined axial direction, and can be stably moved out of the insertion cavity, and the core pulling of the sliding block core 33 is realized.

And a4, synchronously advancing the first front mold assembly 11 and the second front mold assembly 12 to make the demolding space for the product, specifically, synchronously moving the first front mold assembly 11 and the second front mold assembly 12 again by a distance of L2 as shown in FIG. 10.

A5, driving the front mold core blocks 22 to move away from each other for abdicating;

after the step a4 is completed, the two front mold core blocks 22 lose the limit of the second front mold assembly 12, and the two front mold core blocks 22 are driven by the driving device 221 (in this embodiment, an oil cylinder) to move away from each other, so as to realize the final core pulling; the mold opening operation is completed as shown in fig. 11.

And A6, ejecting the product through the ejector pins of the rear die assembly 13 to realize the demoulding of the product.

By adopting the device and the injection molding method based on the device, the injection molding of the product can be well realized, the mold is simple in structure, and the demolding qualification rate is high.

Specifically, in the embodiment, the front mold core is formed by splicing a plurality of front mold core blocks 22 which can be assembled on the rear mold component 13 in a lateral sliding manner, and the core-pulling abdication is realized through the lateral sliding; the structure design is simple, the core-pulling abdicating operation is easy and quick, and the injection product 100 can be better protected. Of course, in other embodiments, the structure of the front mold core is not limited to this, and the core pulling abdication may also be performed in an overturning manner.

Furthermore, in this embodiment, the rear mold core 21 is recessed with a positioning groove 211 at a position corresponding to the insertion cavity, a positioning protrusion 331 adapted to the positioning groove 211 is formed at the rear end of the slider core 33, and when the slider core 33 is inserted into the insertion cavity, the positioning protrusion 331 is positioned and inserted into the positioning groove 211 to achieve positioning fit, so that the insertion accuracy of the slider core 33 is high, and the dimensional accuracy of the injection molded product 100 is high.

Still further, a through hole 212 is formed in the positioning groove 211 of the rear mold core 21, a positioning pin (not shown) is assembled in the through hole 212, a positioning slot hole 332 is further recessed on the positioning convex portion 331 of the slider core 33, and when the positioning convex portion 331 is positioned and inserted in the positioning groove 211, the positioning pin is simultaneously inserted in the positioning slot hole 332 of the positioning convex portion 331. The secondary positioning of the positioning pin and the positioning slot hole 332 is carried out on the basis of the primary positioning matching of the positioning convex part 331 and the positioning groove 211, and the positioning precision is higher. And the structure is simple and easy to realize. Of course, in other embodiments, the structure of the insertion positioning and fixing of the slider core 33 is not limited thereto.

Further, in this embodiment, a limiting step 334 is formed on the slider core 33, the second front mold assembly 12 includes a front mold plate 121 and a stationary mold core 122 fixedly disposed at the rear end of the front mold plate 121 and corresponding to the mold core, the front mold plate 121 and the stationary mold core 122 are both provided with a guiding insertion hole corresponding to the insertion cavity, the aperture of the guiding insertion hole on the stationary mold core 122 is smaller than the aperture of the guiding insertion hole on the front mold plate 121, and when the slider core 33 is inserted into the insertion cavity and is in place, the limiting step 334 of the slider core 33 abuts against the stationary mold core 122 to achieve limiting. The sliding block core 33 and the mold core can be well prevented from being excessively matched to cause abrasion, and a better protection effect is achieved. Of course, in other embodiments, this is not limiting.

More specifically, the second front mold assembly 12 further includes a slider seat 123 assembled at the front end of the front mold plate 121, the slider seat 123 is also provided with a guiding insertion hole (not shown), and the slider core 33 is inserted into the insertion cavity through the slider seat 123, the front mold plate 121 and the guiding insertion hole on the stationary mold liner 122 in sequence. The slider seat 123 is additionally arranged, and the slider seat 123 can be made of smooth and wear-resistant materials so as to ensure the guiding precision of the slider core 33. Of course, in other embodiments, the structure of the slider seat 123 may not be required.

Further, in this embodiment, the mold further includes a limit button machine, the limit button machine includes a limit screw 72 and a limit slot 71 disposed on the first front mold assembly 11, the limit screw 72 is accommodated in the limit slot 71 and fixed on the second front mold assembly 12 through the first front mold assembly 11, in a mold closing state, a distance of L1 is provided between a nut 721 of the limit screw 72 and a bottom of the limit slot 71, when the first front mold assembly 11 moves forward by a distance of L1 relative to the second front mold assembly 12, the slider core 33 is separated from the insertion cavity, and the nut 721 of the limit screw 72 is also just abutted to the bottom of the limit slot 71, as shown in fig. 8; the continuous forward movement of the first front mold assembly 12 drives the second front mold assembly 12 to move forward synchronously through the abutting engagement of the nut 721 of the limit screw 72 and the limit slot 71. Therefore, the second front mold assembly 12 can be driven to synchronously move forwards through the simple limiting structure, and the matching is accurate and the structure is simple. Of course, in other embodiments, a limit button machine with other structures may be adopted, or a limit button machine is not arranged between the first front mold assembly 11 and the second front mold assembly 12, and the whole process is controlled automatically, and the like.

More specifically, the mold further comprises a sequential buckling machine, the sequential buckling machine comprises a fixed seat (such as a first fixed seat 83 of a first sequential buckling machine 80 and a second fixed seat 93 of a second sequential buckling machine 90 described below), a front limit rod (such as a first front limit rod 81 of the first sequential buckling machine 80 and a second front limit rod 91 of the second sequential buckling machine 90 described below), and a rear limit rod (such as a first rear limit rod 82 of the first sequential buckling machine 80 and a second rear limit rod 92 of the second sequential buckling machine 90 described below), the fixed seat is fixedly arranged on the second front mold component 12 and provided with two sets of front-rear through yielding holes (not shown), the front end of the front limit rod is fixed on the first front mold component 11, the rear end of the rear limit rod is fixed on the rear mold component 13, and in a mold closing state, the front end of the rear limit rod penetrates through one set of the yielding holes of the fixed seat and is fastened with the fixed seat, the rear end of the front limiting rod penetrates through the other group of yielding holes of the fixing seat and extends backwards for an L1 distance, and a triggering part used for triggering and releasing the buckling of the rear limiting rod and the fixing seat is formed at the rear end of the front limiting rod.

The matching mode of the sequential button sewing machine and the limiting button sewing machine is as follows: when the mold opening is started (as the above step A3), the first front mold assembly 11 is moved forward, in this step A3, the first front mold assembly 11 moves forward relative to the second front mold assembly 12, the nut 721 of the limit screw 72 of the limit button machine has a moving space in the limit slot 71, and the front limit rod of the sequential button machine also moves forward synchronously, and the fastening structure of the rear limit rod and the fixed seat enables the second front mold assembly 12 to keep still when the first front mold assembly 11 moves forward, so as to prevent abnormal mold release caused by the movement of the second front mold assembly 12 before the slider core 33 is not disengaged from the insertion cavity. When first front mould subassembly 11 antedisplacement L1 distance, when accomplishing step A3 promptly, slider core 33 breaks away from insert the chamber, and stop screw 72's nut 721 just supports in the tank bottom of spacing slotted hole 71, and the trigger part of the preceding stopper rod of order knot machine also just penetrates the yielding hole of fixing base and triggers the buckling structure of back stopper rod and fixing base to the buckling of back stopper rod and fixing base is relieved. At this point, step A4 is entered, and the continued forward movement of the first front mold assembly 11 will cause the second front mold assembly 12 to move forward synchronously until step A4 is completed.

The sequential button sewing machine and the limiting button sewing machine are matched; the mechanical structure is adopted, the sequence and the action of the mold opening action of the front mold (namely the first front mold assembly 11 and the second front mold assembly 12) can be well controlled, and the structure is simple, the precision is high, and the cost is low. Of course, in other embodiments, one of the sequential button making machine and the limit button making machine may be separately used to implement the corresponding function, for example, the sequential button making machine is separately used to sequentially unlock the first front mold assembly 11 and the second front mold assembly 12, or the limit button making machine may be separately used; or the control is carried out by a numerical control mode instead of adopting the method.

More specifically, in this embodiment, there are two types of sequential button sewing machines, which are respectively defined as a first sequential button sewing machine 80 and a second sequential button sewing machine 90; the mold has four sidewalls, a first progressive sear 80 disposed on one of the opposing sidewalls and a second progressive sear 90 disposed on the other opposing sidewall.

Specifically, referring to fig. 2, 3, 4 and 13, the fixing seat, the front limit rod and the rear limit rod of the first sequential fastener 80 are defined as a first fixing seat 83, a first front limit rod 81 and a first rear limit rod 82, respectively, the first sequential fastener 80 further includes a first sliding latch 85 and a first elastic member 84 disposed in the first fixing seat 83, the first sliding latch 85 is slidably mounted in the first fixing seat 83 (e.g. slidably mounted in left and right directions in fig. 13), two end portions defining a lateral sliding direction of the first sliding latch 81 are a first end (a left end in fig. 13) and a second end (a right end in fig. 13), a middle position of the first sliding latch 85 is provided with a relief opening for the first front limit rod 81 to penetrate through, the first elastic member 84 is disposed between the first fixing seat 83 and the first end of the first sliding latch 85, and applies an elastic force to the first sliding latch 85 toward the second end of the first sliding latch 85, the front end of the first rear limiting rod 82 is provided with a clamping joint 821, and is clamped at the second end of the first sliding clamping block 85 through the clamping joint 821; the triggering portion of the first front limiting rod 81 is a convex portion 811 protruding and extending towards the first end direction of the first sliding block 85, when the first front mold assembly 11 moves forward by a distance of L1, the convex portion 811 of the first front limiting rod 81 enters the receding port of the first sliding block 85, and pushes the first sliding block 85 to slide towards the first end direction by overcoming the elastic force of the first elastic member 84, so that the second end of the first sliding block 85 is separated from the clamping head 821 of the first rear limiting rod 82, and the unlocking of the second front mold assembly 12 and the rear mold assembly 13 is realized.

Referring to fig. 2, 3, 4 and 14, the fixing seat, the front limiting rod and the rear limiting rod of the second sequential buckle 90 are defined as a second fixing seat 93, a second front limiting rod 91 and a second rear limiting rod 92, respectively, the second sequential buckle 90 further includes a second sliding block 95, a second elastic element 94 and a limiting convex column 96 arranged in the second fixing seat 93, the second rear limiting rod 92 adopts a limiting rod with a certain elastic deformation, a fixing slot hole (not labeled) is recessed in a side wall of the second rear limiting rod 92, and the side wall is clamped on the limiting convex column 96 through the fixing slot hole, as shown in fig. 14. The second sliding latch 95 is slidably mounted in the second fixing seat 93 in a lateral direction (e.g., sliding left and right in fig. 14), two end portions defining the lateral sliding direction of the second sliding latch 95 are a first end (right end in fig. 14) and a second end (left end in fig. 14), the second elastic element 94 is disposed between the second fixing seat 93 and the first end of the second sliding latch 95, and applies an elastic force to the second sliding latch 95 towards the second end of the second sliding latch 95, and the second end of the second sliding latch 95 corresponds to the second rear limiting rod 92. An abdicating port (not shown) is formed in the middle position of the second sliding fixture block 95, and the second front limiting rod 91 is inserted into the abdicating port of the second sliding fixture block 95 to limit the sliding of the second sliding fixture block 95; the triggering portion of the second front limiting rod 91 is a laterally recessed abdicating step 911, when the first front mold assembly 11 moves forward by the distance of L1, the abdicating step 911 of the second front limiting rod 91 enters the abdicating opening of the second sliding fixture block 95 to abdicate the sliding of the second sliding fixture block 95, the second sliding fixture block 95 slides toward the second end direction under the action of the second elastic member 94, and impacts the second rear limiting rod 92 to separate the second rear limiting rod 92 from the limiting convex column 96, so as to unlock the second front mold assembly 12 and the rear mold assembly 13.

More specifically, the first elastic member 84 and the second elastic member 94 are both springs, which are simple in structure, convenient to assemble and easy to obtain. Of course, in other embodiments, the first elastic element 84 and/or the second elastic element 94 may be replaced by other elastic elements having elastic force, such as elastic pieces.

The two sequential buckling machines are simple in structure and easy to realize. Of course, in other embodiments, the sequential sear is not so limited.

Further, the mold closing step of the mold is as follows: in the mold opening state, the first step: the two front mold core blocks 22 are closed and combined to form an insertion cavity and a body cavity 201; the second step is that: the second front mold component 12 and the rear mold component 13 are firstly closed, when the second front mold component 12 is moved, the first front mold component 11 and the second front mold component 12 are synchronously translated (in the embodiment, the first front mold component 11 is driven to synchronously translate through a limit buckle machine), so that the position of the sliding block core 33 can be ensured to be unchanged, and after the second front mold component 12 and the rear mold component 13 are closed, the sliding block core 33 can be just opposite to the opening of the insertion cavity; at the same time, the rear limit rod of the sequential button machine can also reach the locking position (at the moment, the locking is not carried out yet). The third step: closing the first front mold assembly 11, and inserting the slide block core 33 into the insertion cavity to form an injection molding cavity 200 in the mold closing movement process of the first front mold assembly 11; meanwhile, the triggering part of the front limiting rod of the sequential button sewing machine is separated from the fixed seat, and the rear limiting rod and the fixed seat are locked again; thus, the mold closing process is completed.

Further, in this embodiment, as shown in fig. 1, the product body 101 further has an inverted buckle structure 103 thereon. The mold further comprises a back-off forming assembly, the back-off forming assembly comprises a slide block 41 and an inclined guide post 42, an abdicating notch (not shown) penetrating through the body cavity 201 is formed on the outer peripheral side of the rear mold core 21, a back-off forming structure (specifically, a specific layout structure of the back-off forming structure is designed by a person skilled in the art according to the specific back-off structure 103) for forming the back-off structure 103 and an inclined guide slot 411 for inclined guide fit are formed on the slide block 41 and can be laterally and slidably assembled on the rear mold assembly 13, the front end of the inclined guide post 42 is fixed on the second front mold assembly 12, the rear end of the inclined guide post is inserted into the inclined guide slot 411 of the slide block 41 to realize inclined guide fit, the movement of the second front mold assembly 12 close to or far away from the rear mold assembly 13 drives the slide block 41 to be inserted into the abdicating notch through the inclined guide fit of the inclined guide post 42 and the inclined guide slot 411 so that the back-off sliding block is in place or drives the abdicating notch to make the back-off the The inverted forming structure is dislocated. When the second front mold assembly 12 moves closer to the rear mold assembly 13 (during mold closing), the inclined guide post 42 is inserted into the inclined guide slot hole 411, so as to drive the slide block 41 to slide inward, i.e., to insert the abdicating notch to make the inverted-buckle-forming structure in place, so as to perform injection molding. When the second front mold assembly 12 moves away from the rear mold assembly 13 (when the mold is opened), the inclined guide post 42 is separated from the inclined guide slot hole 411, so that the sliding block 41 is driven to slide outwards, namely, the slide block is separated from the abdicating notch, so that the inverted buckle forming structure is dislocated, and core-pulling abdicating is realized. The structure is simple to realize, and the mold opening and closing action of the second front mold assembly 12 is completed without driving by an additional driving mechanism. Of course, in other embodiments, the molding structure capable of realizing the undercut structure 103 on the product body 101 is not limited thereto.

Further, in this embodiment, as shown in fig. 1, the end of the hollow handle 102 is further provided with a bayonet structure 104. The mold further comprises a bayonet forming assembly, and the bayonet forming assembly comprises a first bayonet forming unit and a second bayonet forming unit. The first bayonet forming unit is used for preparing the bayonet structure 104 located in the oblique direction of the front end portion of the slider core 33, as shown in fig. 6, the front end portion of the slider core 33 is oblique to the left, and therefore, the first bayonet forming unit is used for preparing the bayonet structure 104 located at the left end; while a second bayonet forming unit is used to prepare the bayonet structure 104 in a position offset from the front end of the slider core 33.

Specifically, the second bayonet molding unit includes a second sliding block 61 and a wedge block 62, the second sliding block 61 has a bayonet molding structure for molding the bayonet structure 104 and an inclined guide groove (not shown) for inclined guide fit, the front end of the wedge block 62 is fixed on the first front mold assembly 11, the rear end of the wedge block 62 forms inclined guide fit with the second sliding block 61, namely, the inclined guide fit is realized in the inclined guide groove of the second sliding block 61, and the first front mold assembly 11 is close to or far away from the second front mold assembly 12 and is moved by the wedge block 62 to drive the second sliding block 61 to switch between the in-position and the out-of-position of the bayonet molding structure. When the first front mold assembly 11 moves close to the second front mold assembly 12, the wedge block 62 drives the second slide block 61 to move towards the opening of the insertion cavity so as to reach the position for injection molding; when the mold is opened, namely the first front mold assembly 11 moves away from the second front mold assembly 12, the wedge block 62 drives the second sliding block 61 to move towards the direction away from the opening of the insertion cavity so as to reach the dislocation position, and thus the core-pulling abdication is realized. Since the second slide block 61 of the second bayonet coupling unit is offset from the front end of the slide block core 33, the wedge block 62 can be directly connected to the first front mold assembly 11 through the second front mold assembly 12, and the structure is simple.

Of course, in other embodiments, the structure of the wedge block 62 driving the second sliding block 61 to form the mitre fit is not limited to this.

The first bayonet forming unit of this embodiment includes a first sliding block 51, a connecting rod 52, a telescopic driving device 53 and a limiting rod 54, where the first sliding block 51 has a bayonet forming structure (specifically, a specific layout structure of the bayonet forming structure is designed by those skilled in the art according to the specific bayonet structure) for forming the bayonet structure 104 and an inclined guide slot (not shown) for inclined guide fit, the first sliding block 51 is slidably assembled on the second front mold assembly 12, the connecting rod 52 is laterally (i.e. perpendicular to the front-back direction), a first end of the connecting rod 52 is formed with an inclined guide convex rib (not shown), and the inclined guide convex rib fits into the inclined guide slot of the first sliding block 51 to realize inclined guide fit, the telescopic driving device 53 (in this embodiment, an air cylinder, an oil cylinder, etc.) is embedded on the second front mold assembly 12, and a driving end thereof is telescopically connected to a second end of the connecting rod 52, the first slide block 51 is driven by the connecting rod 52 to switch between the in-place position and the out-of-place position of the bayonet molding structure, the connecting rod 52 is provided with a limit notch (not marked) at the position of the front end part of the staggered slide block core 33, the front end of the limit rod 54 is connected with the first front mold assembly 11, the rear end of the limit rod corresponds to the limit notch of the connecting rod 52, and the limit rod 52 is inserted into the limit notch of the connecting rod 52 to limit the action of the connecting rod 52 during mold closing. So set up, first sliding block 51 is through the connecting rod 52 that the side direction set up, then drives connecting rod 52 through flexible drive arrangement 53 and carries out lateral shifting to realize that the first sliding block 51 of drive slides and switches, ingenious the hindrance of having avoided first sliding block 51 dead ahead.

Meanwhile, the structure of the limiting rod 54 is additionally arranged, so that the position of the first sliding block 51 can be well limited after die assembly, the position of the first sliding block 51 is more stable, and after die opening is carried out, the limiting rod is separated from the limiting notch of the connecting rod 52 along with separation of the first front die assembly 11, so that limitation is naturally removed, the structural design is ingenious, and a mechanism for controlling the limiting rod 54 is not required to be additionally arranged. Of course, in other embodiments, the first bayonet forming unit may not be configured with the stop rod 54.

Specifically, the structure of the inclined guide engagement between the link 52 and the first sliding block 51 is not limited to this, and other manners may be used, such as providing an inclined guide groove on the link 52, providing an inclined guide rib on the first sliding block 51 to engage with the inclined guide groove, and so on.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. An injection mold for an injection molding product with an inclined handle, the injection molding product having a product body and a hollow handle formed on the product body and arranged obliquely; the method is characterized in that: the mold comprises a first front mold component, a second front mold component and a rear mold component which are arranged in sequence from front to back and can move relatively, and a mold core positioned between the second front mold component and the rear mold component; the mold core consists of a rear mold core and a front mold core, and the rear mold core and the front mold core jointly form a body cavity for injection molding a product body; but preceding mold core is formed by the concatenation of a plurality of lateral sliding assemble preceding mold core pieces on back mould subassembly, and a plurality of preceding mold core pieces enclose jointly and close the chamber that inserts that forms the slope, be equipped with the slider that leads that a slope set up on the first preceding mould subassembly, it is equipped with a slidable slider core on the slider to lead, set up the direction jack that corresponds the chamber that inserts on the preceding mould subassembly of second, the slider core passes the direction jack and inserts to the chamber that inserts of mold core to constitute the handle die cavity that is used for the handle of moulding plastics jointly with preceding mold core.

2. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: the rear mold core is provided with a positioning groove in a concave mode at the position corresponding to the insertion cavity, a positioning convex part matched with the positioning groove is formed at the rear end of the slider core, and when the slider core is inserted into the insertion cavity, the positioning convex part is inserted into the positioning groove in a positioning mode to achieve positioning fit.

3. The injection mold for an injection molded product with an inclined handle as set forth in claim 2, wherein: the positioning groove of the rear mold core is internally provided with a through hole, a positioning pin is assembled in the through hole, a positioning groove hole is further sunken in the positioning convex part of the slider core, and when the positioning convex part is positioned and inserted in the positioning groove, the positioning pin is simultaneously inserted into the positioning groove hole of the positioning convex part.

4. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: the slide block core is provided with a limiting step, the second front mold component comprises a front mold plate and a stationary mold container which is fixedly arranged at the rear end of the front mold plate and corresponds to the mold core, the front mold plate and the stationary mold container are respectively provided with a guide jack corresponding to the insertion cavity, the aperture of the guide jack on the stationary mold container is smaller than that of the guide jack of the front mold plate, the slide block core is inserted into the insertion cavity and is in place, and the limiting step of the slide block core is abutted to the stationary mold container to realize limiting.

5. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: and the front-back linear distance of the slider core separated from the insertion cavity is defined as L1, the die further comprises a limiting button machine, the limiting button machine comprises a limiting screw and a limiting slotted hole formed in the first front die assembly, the limiting screw is accommodated in the limiting slotted hole and penetrates through the first front die assembly to be fixed on the second front die assembly, the distance between the nut of the limiting screw and the bottom of the limiting slotted hole is L1 in a die closing state, when the first front die assembly moves forwards for the distance of L1 relative to the second front die assembly, the slider core is separated from the insertion cavity, and the first front die assembly moves forwards continuously to drive the second front die assembly to move forwards synchronously through the abutting fit of the nut of the limiting screw and the limiting slotted hole.

6. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: the definition the slider core breaks away from insert the front and back linear distance in chamber is L1, and the mould still includes the order machine of detaining, the order is detained the machine and is included fixing base, preceding gag lever post and back gag lever post, the fixing base is fixed to be set up on the second front mould subassembly to set up two sets of holes of stepping down that link up around, the front end of preceding gag lever post is fixed in on the first front mould subassembly, the rear end of back gag lever post is fixed in on the back mould subassembly, under the compound die state, the front end of back gag lever post is worn to locate one of them group of holes of stepping down of fixing base and is fixed with fixing base looks lock joint, the rear end of preceding gag lever post passes another set of holes of fixing base and extends L1 distance backward, the rear end of preceding gag lever post is formed with the trigger part that is used for triggering to remove back gag lever post and fixing base looks lock joint.

7. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: the product body is further provided with a back-off structure, the die further comprises a back-off forming assembly, the back-off forming assembly comprises a sliding block and an inclined guide post, a yielding notch penetrating through the body cavity is formed in the outer peripheral side of the rear die core, the sliding block is provided with a back-off forming structure used for forming the back-off structure and an inclined guide groove hole used for being obliquely guided and matched, the back-off forming structure and the inclined guide groove hole can be assembled on the rear die assembly in a lateral sliding mode, the front end of the inclined guide post is fixed on the second front die assembly, the rear end of the inclined guide post is inserted into the inclined guide groove hole of the sliding block to achieve inclined guide matching, the second front die assembly is close to or far away from the rear die assembly, the inclined guide post is matched with the inclined guide groove hole to drive the sliding block to be inserted into the yielding notch so that the back-off forming structure is in place or the sliding block is separated from.

8. The injection mold for an injection molded product with an inclined handle as set forth in claim 1, wherein: the end part of the hollow handle is also provided with a bayonet structure, the mould also comprises a bayonet forming assembly, and the bayonet forming assembly is provided with a first bayonet forming unit; the first bayonet forming unit is used for preparing a bayonet structure positioned in the inclined direction of the front end part of the sliding block core, the first bayonet forming unit comprises a first sliding block, a connecting rod, a telescopic driving device and a limiting rod, the first sliding block is provided with an inverted buckle forming structure used for forming an inverted buckle structure and an inclined guide groove used for inclined guide matching, the connecting rod is arranged laterally, a first end of the connecting rod is provided with an inclined guide convex rib, the inclined guide convex rib is matched in the inclined guide groove of the first sliding block to realize inclined guide matching, the telescopic driving device is embedded in the second front mold component, a telescopic driving end of the telescopic driving device is connected with a second end of the connecting rod to drive the first sliding block to be switched between an in-position and a dislocation position of the inverted buckle forming structure through the connecting rod, a limiting notch is formed in the position of the front end part of the sliding block core in a staggered mode, and the front end of the limiting, the rear end of the connecting rod corresponds to the limiting notch of the connecting rod and is inserted into the limiting notch of the connecting rod to limit the action of the connecting rod when the die is closed.

9. The injection mold for an injection molded product with an inclined handle as claimed in claim 8, wherein: the bayonet forming assembly is also provided with a second bayonet forming unit; the second bayonet forming unit is used for preparing a bayonet structure which is staggered with the front end part of the sliding block core, the second bayonet forming unit comprises a second sliding block and a wedge block, the second sliding block is provided with a bayonet forming structure for forming the bayonet structure and an inclined guide groove for inclined guide fit, the front end of the wedge block is fixed on the first front die assembly, the rear end of the wedge block is inclined guide fit with the second sliding block, and the first front die assembly moves close to or far away from the second front die assembly and drives the second sliding block to switch between the in-position and the out-of-position of the bayonet forming structure through the wedge block.

10. An injection molding method of an injection molded product with an inclined handle, the injection molded product having a product body and a hollow handle formed on the product body and arranged obliquely, characterized by comprising the steps of:

a1, providing an injection mold of the injection product with the inclined handle as claimed in any one of claims 1 to 9, closing the mold to enable the slide block core to be inserted into the insertion cavity to form a handle cavity, and communicating the body cavity with the handle cavity to obtain an injection cavity of the product;

a2, injecting plastic liquid into the injection molding cavity, and cooling and solidifying to obtain a molded injection molding product;

a3, moving the first front mould assembly forward until the slide block core is driven to be separated from the insertion cavity;

a4, synchronously moving the first front mold assembly and the second front mold assembly forwards to make the demolding space of the product;

a5, driving the front mold core blocks to move away from each other for abdicating;

and A6, ejecting the product through the ejector pin of the rear die assembly to realize the demoulding of the product.

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