Fixed mold side movable cavity injection mold

Abstract

The fixed mold side movable cavity injection mold comprises a fixed mold plate and a movable mold plate, a fixed insert is arranged in the fixed mold plate, and a movable mold core is arranged on the movable mold plate; opposite lateral core-pulling assemblies are arranged on the left side and the right side of the movable mold plate, and a concave part used for forming the side wall of the handrail is arranged between the guide pillar lateral core-pulling assembly and the corresponding side wall of the movable mold core; two parallel backward core-pulling assemblies are arranged on the rear side of the movable mold plate, and a connecting part which is used for forming the rear side of the handrail and is concavely arranged forwards is arranged between the backward core-pulling assemblies and the rear side wall of the movable mold core; a forward core-pulling assembly is arranged on the front side of the movable mold plate, and an inclined through hole part used for forming the front side of the handrail is arranged between the backward core-pulling assembly and the front side wall of the movable mold core; when demolding is needed, the fixed mold plate and the movable mold plate are subjected to mold opening, the fixed insert is far away from the movable mold core, meanwhile, the two lateral core-pulling assemblies, the two backward core-pulling assemblies and the forward core-pulling assembly are far away from the movable mold core, finally, a handrail is jacked upwards through the ejector pin, demolding of a product is achieved, and in conclusion, injection molding of the handrail is achieved.

Description

Technical Field

[0001] The invention relates to the field of molds, in particular to an injection mold with a movable cavity on a fixed mold side. Background Art

[0002] The fixed side movable cavity injection mold is used to form the automobile armrest, see Figure 1 、 Figure 2 The armrest 001 is provided with a connecting portion 01 on the rear side, and the function of the connecting portion 01 is to connect with the car (rotate the connecting portion 90 degrees and connect with the car downward); recessed portions 02 are provided on the left and right sides, and the function of the recessed portion 02 is to make the space on the side of the driving seat larger; a through-hole portion 03 is provided on the front side, and the function of the through-hole portion 03 is to allow the gear shift part of the car to pass through; but for the armrest 001, due to the existence of the connecting portion 01, the recessed portion 02 and the through-hole portion 03, a simple injection mold cannot realize the injection molding of the armrest 001.

[0003] In summary, how to realize the injection molding of handrails has become an urgent problem that researchers in this field need to solve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to realize the injection molding of the handrail; In order to solve the above technical problems, the technical solution adopted by the present invention is: The present invention is an injection mold with a movable cavity on a fixed mold side, comprising: a fixed mold plate, a movable mold plate arranged at the lower part of the fixed mold plate, a fixed insert being arranged in the fixed mold plate, and a movable mold core being arranged on the movable mold plate; opposite lateral core pulling assemblies are arranged on the left and right sides of the movable mold plate, and a recessed portion between the guide column lateral core pulling assembly and the corresponding side walls of the movable mold core is used to form the side walls of the handrail; two parallel rear core pulling assemblies are arranged on the rear side of the movable mold plate, and a forward recessed connection portion between the rear core pulling assembly and the rear side wall of the movable mold core is used to form the rear side of the handrail; a forward core pulling assembly is arranged on the front side of the movable mold plate, and a through hole portion oblique to the front side of the handrail is formed between the rear core pulling assembly and the front side wall of the movable mold core.

[0005] Furthermore, movable inserts are provided on the left and right sides of the movable mold core, and the movable inserts and the lateral core pulling assembly are used to form undercut ribs on the inner wall of the armrest side, and the bottom of the movable insert is connected to the corresponding inclined top assembly.

[0006] Furthermore, the side core pulling assembly includes: a side pulling plate, a side surface of which is close to the movable mold core and is provided with a protrusion for forming a recessed portion protruding inward; a side pulling slide, which is provided at the bottom of the side pulling plate, and the side pulling slide is matched with the side pulling slide rail at the top of the movable mold plate; a side pulling pin, one bottom end of which is connected to the side pulling slide, and one top end of which is inclined toward the movable mold core, and the bottom of the fixed mold plate is provided with a side pulling hole matching the side pulling pin.

[0007] Furthermore, the rear core pulling assembly includes: a rear pulling plate, a side surface of which close to the movable mold core protrudes inward and is provided with a molding portion for forming a connecting portion; a rear pulling slide, which is arranged at the bottom of the rear pulling plate, and the rear pulling slide matches the rear pulling slide rail at the top of the movable mold plate; a rear pulling pin, one bottom end of which is connected to the rear pulling slide, and one top end of which is inclined toward the movable mold core, and the bottom of the fixed mold plate is provided with a rear pulling hole matching the rear pulling pin.

[0008] Furthermore, the forward core pulling assembly includes: a front pulling slide, which is arranged on the front side of the movable mold plate and extends obliquely upward; a front pulling cylinder, which is fixed on the front pulling slide; a front pulling slider, which is slidably arranged on the front pulling slide and connected to the output end of the front pulling cylinder; a front pulling plate, whose side surface close to the movable mold core is a fitting surface, and the fitting surface is fitted with the movable mold core for forming a through hole portion.

[0009] Furthermore, the outer side surface of the front drawer plate is a first guiding inclined surface, and the inner wall of the fixed template is a second guiding inclined surface matching the first guiding inclined surface.

[0010] Furthermore, the inclined jacking assembly includes: a retaining seat, which is fixed on the jacking plate; a jacking rod is arranged obliquely, the bottom of which is slidably connected to the retaining seat, and the top of which passes through the movable template and is connected to the corresponding movable insert on the side of the movable mold core; when the jacking plate is lifted, the two jacking rods move upward and approach each other under the guidance of the movable template, and while the top of the jacking rod lifts the handrail upward, the two movable inserts approach each other and separate from the inner side wall of the handrail.

[0011] Beneficial effects of the present invention: The present invention is an injection mold with a movable cavity on a fixed mold side. When injection molding is required, the fixed mold plate and the movable mold plate are closed. At this time, the fixed insert, the movable mold core, the two side core pulling assemblies, the two rear core pulling assemblies, and the front core pulling assembly are close to each other, and the medium is injected from the gate sleeve of the fixed mold plate. The medium fills the gaps between the fixed insert, the movable mold core, the side core pulling assembly, the rear core pulling assembly, and the front core pulling assembly to form an armrest that drives the through hole part, the connecting part, and the recessed part; when demolding is required, the fixed mold plate and the movable mold plate are opened, and the fixed insert is away from the movable mold core. At the same time, the two side core pulling assemblies, the two rear core pulling assemblies, and the front core pulling assembly are away from the movable mold core. Finally, the armrest is pushed upward by the ejector pin to realize demolding of the product. In summary, the injection molding of the armrest is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and examples.

[0013] Figure 1 It is a structural diagram of the handrail; Figure 2 This is a structural diagram of the handrail from another perspective; Figure 3 It is a structural diagram of the injection mold in the mold closing state; Figure 4 It is a structural diagram of the injection mold in the mold opening state; Figure 5 It is an exploded view with the fixed template omitted; Figure 6 It is an exploded view from another perspective with the fixed template omitted; Figure 7 It is a cross-sectional view with the fixed template omitted; Figure 8 It is a cross-sectional view from another perspective in which the fixed template is omitted; Figure 9 It is the matching diagram of the movable insert and the movable mold core; Figure 10 This is the coordination diagram of the moving insert and the inclined ejector assembly. DETAILED DESCRIPTION

[0014] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0015] See also Figure 1-10The present embodiment is an injection mold for a movable cavity on a fixed mold side, comprising: a fixed mold plate 1, a movable mold plate 2 arranged at the lower part of the fixed mold plate 1, a fixed insert 3 being arranged in the fixed mold plate 1, and a movable mold core 21 being arranged on the movable mold plate 2; opposite lateral core pulling assemblies 4 are arranged on the left and right sides of the movable mold plate 2, and a recessed portion 01 for forming the side wall of the handrail 001 between the guide column lateral core pulling assembly 4 and the corresponding side wall of the movable mold core 21; two parallel rearward core pulling assemblies 5 are arranged on the rear side of the movable mold plate 2, and a forward recessed connection portion 02 for forming the rear side of the handrail 001 between the rearward core pulling assembly 5 and the rear side wall of the movable mold core 21; a forward core pulling assembly 6 is arranged on the front side of the movable mold plate 2, and a through hole portion 03 oblique to the front side of the handrail 001 is formed between the rearward core pulling assembly 6 and the front side wall of the movable mold core 21; When injection molding is required, the fixed platen 1 and the movable platen 2 are closed. At this time, the fixed insert 3, the movable mold core 21, the two side core pulling assemblies 4, the two rear core pulling assemblies 5, and the front core pulling assembly 6 are close to each other. The medium is injected from the gate sleeve of the fixed platen 1. The medium fills the gap between the fixed insert 3, the movable mold core 21, the side core pulling assembly 4, the rear core pulling assembly 5, and the front core pulling assembly 6, forming the handrail 001 that drives the through-hole part 03, the connecting part 02, and the recessed part 01; When demoulding is required, the fixed template 1 and the movable template 2 are opened, and the fixed insert 3 is moved away from the movable mold core 21. At the same time, the two side core pulling assemblies 4, the two rear core pulling assemblies 5, and the front core pulling assembly 6 are moved away from the movable mold core 21. Finally, the armrest 001 is pushed upward by the ejector to realize the demoulding of the product. In summary, the injection molding of the armrest 001 is realized.

[0016] In some possible embodiments, since the inner wall of the side of the handrail 001 is provided with an undercut rib 04, the undercut rib 04 is used to maintain sufficient strength of the side of the handrail 001. However, due to the presence of the undercut rib 04, the handrail 001 cannot be vertically separated from the movable mold core 21. In order to solve the above problem, this embodiment adopts a method of providing movable inserts 22 on the left and right sides of the movable mold core 21. The movable inserts 22 and the lateral core pulling assembly 4 are used to form the undercut rib 04 on the inner wall of the side of the handrail 001. The bottom of the movable insert 22 is connected to the corresponding inclined top assembly 7. In this embodiment, the movable insert 22 is pushed upward by the inclined push assembly 7 and approaches each other at the same time, so that the movable insert 22 can not only realize the lifting and demoulding of the armrest 001, but also realize the separation of the movable insert 22 from the inner wall of the side of the armrest 001.

[0017] In some possible embodiments, the side core pulling assembly 4 includes: a side pulling plate 41, a side surface of which is close to the movable mold core 2 and is provided with a protrusion 42 for forming the recessed portion 01; a side pulling slide 43, which is provided at the bottom of the side pulling plate 41, and the side pulling slide 43 is matched with the side pulling slide rail at the top of the movable mold plate 2; a side pulling pin 44, one end of which is connected to the side pulling slide 43 at the bottom and is inclined toward the movable mold core 21 at the top, and a side pulling hole matching the side pulling pin 44 is provided at the bottom of the fixed mold plate 1; In this embodiment, when in the mold closing state, the side withdrawal pin 44 is located in the side withdrawal hole, and the side withdrawal plate 41 is close to the limit position of the movable mold core 21; when in the mold opening state, the side withdrawal pin 44 is disengaged from the side withdrawal hole. At this time, under the guidance of the side withdrawal pin 44 and the side withdrawal hole, the side withdrawal plate 41 is horizontally moved away from the movable mold core 21 to the limit position; a gap is formed between the protrusion 42 and the movable mold core 21, and when the medium fills this gap, the forming of the recessed portion 01 is realized.

[0018] In some possible embodiments, the rear core pulling assembly 5 includes: a rear pull-out plate 51, a side surface of which is close to the movable mold core 21 and is provided with a molding portion 52 for forming the connecting portion 02; a rear pull-out slide 53, which is provided at the bottom of the rear pull-out plate 51, and the rear pull-out slide 53 matches the rear pull-out slide rail at the top of the movable mold plate 2; a rear pull-out pin 54, one end of which is connected to the rear pull-out slide 53 at the bottom and is inclined toward the movable mold core 21 at the top, and a rear pull-out hole matching the rear pull-out pin 54 is provided at the bottom of the fixed mold plate 1; In this embodiment, when in the mold closing state, the rear withdrawal pin 54 is located in the rear withdrawal hole, and the rear withdrawal plate 51 is close to the limit position of the movable mold core 21; when in the mold opening state, the withdrawal pin 54 is then disengaged from the rear withdrawal hole. At this time, under the guidance of the rear withdrawal pin 54 and the rear withdrawal hole, the rear withdrawal plate 51 is horizontally moved away from the movable mold core 21 to the limit position; a gap is formed between the molding part 52 and the movable mold core 21, and when the medium fills this gap, the molding of the connecting part 02 is realized.

[0019] In some possible embodiments, the forward core pulling assembly 6 includes: a front pulling slide 61, which is arranged on the front side of the movable mold plate 2 and extends obliquely upward; a front pulling cylinder 62, which is fixed on the front pulling slide 61; a front pulling slider 63, which is slidably arranged on the front pulling slide 61 and connected to the output end of the front pulling cylinder 62; a front pulling plate 64, whose side surface close to the movable mold core 21 is a fitting surface 65, and the fitting surface 65 is fitted with the movable mold core 21 to form the through hole portion 03; See also Figure 1The through hole portion 03 of the armrest is set obliquely upward, so the front drawer plate 64 also needs to move obliquely to avoid the situation where the front drawer plate 64 cannot be demoulded; specifically, when in the mold closing state, the front drawer cylinder 62 extends, and the front drawer plate 64 fits the movable mold core 21. At this time, the front drawer plate 64 is in the extreme position, and there is no gap between the fitting surface 65 of the front drawer plate 64 and the movable mold core 21, and the medium cannot be filled here, thereby realizing the molding of the through hole portion 03 of the armrest 001; when in the mold opening state, the front drawer cylinder 62 retracts, and the front drawer plate 64 moves obliquely upward away from the movable mold core 21 under the guidance of the front drawer slider 63 and the front drawer slide seat 61.

[0020] In some possible embodiments, the outer side surface of the front drawer plate 64 is a first guiding inclined surface 66, and the inner wall of the fixed template 1 is a second guiding inclined surface matching the first guiding inclined surface 66; In this embodiment, when the mold is closed, the second guide bevel is pressed onto the first guide bevel 65, pressing the fixed mold plate 1 onto the front drawer plate 64, so that the front drawer plate 64 is attached to the movable mold core 21. In addition to the thrust given by the front drawer cylinder 62, there is also downward pressure given by the fixed mold plate 1, ensuring that the fitting portion 65 is attached to the movable mold core 21 without any gap.

[0021] In some possible embodiments, the inclined jacking assembly 7 includes: a retaining seat 71, which is fixed on the jacking plate 8; a jacking rod 72 is arranged at an angle, the bottom of which is slidably connected to the retaining seat 71, and the top of which passes through the movable template 2 and is connected to the corresponding movable insert 22 on the side of the movable mold core 21; the jacking plate 8 is lifted, and the two jacking rods 72 move upward and approach each other under the guidance of the movable template 2. While the top of the jacking rod 72 lifts the handrail 001 upward, the two movable inserts 22 approach each other and detach from the inner wall of the handrail 001.

[0022] With the above-described preferred embodiments of the present invention as inspiration, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An injection mold with a movable cavity on the fixed mold side, characterized in that: include: A fixed platen, a movable platen arranged at the lower part of the fixed platen, a fixed insert being arranged in the fixed platen, and a movable die core being arranged on the movable platen; The left and right sides of the movable plate are provided with opposite lateral core pulling assemblies, and the recessed portion between the guide column lateral core pulling assembly and the corresponding side wall of the movable mold core is used to form the side wall of the handrail; Two parallel rear core pulling assemblies are provided on the rear side of the movable platen, and a connection portion concave forwardly provided on the rear side of the armrest is formed between the rear core pulling assemblies and the rear side wall of the movable die core; A forward core pulling assembly is provided on the front side of the movable die plate, and a through hole portion oblique to the front side of the handrail is formed between the backward core pulling assembly and the front side wall of the movable die core.

2. The fixed mold side movable cavity injection mold according to claim 1, characterized in that: Movable inserts are provided on the left and right sides of the movable mold core. The movable inserts and the lateral core pulling assembly are used to form undercut ribs on the inner wall of the armrest side. The bottom of the movable insert is connected to the corresponding inclined top assembly.

3. The fixed mold side movable cavity injection mold according to claim 1, characterized in that: The lateral core pulling assembly includes: A side drawer plate, whose side surface close to the movable mold core protrudes inwardly and is provided with a protrusion for forming the recessed portion; A side-drawing slide is provided at the bottom of the side-drawing plate, and the side-drawing slide matches the side-drawing slide rail at the top of the movable plate; A side pull-out pin has one bottom end connected to the side pull-out slide and one top end inclined toward the movable mold core. A side pull-out hole matching the side pull-out pin is provided at the bottom of the fixed mold plate.

4. The fixed mold side movable cavity injection mold according to claim 1, characterized in that: The backward core pulling assembly includes: A rear drawer plate, a side surface of which, close to the movable mold core, protrudes inward and is provided with a molding portion for molding the connecting portion; A rear pull-out slide is provided at the bottom of the rear pull-out plate, and the rear pull-out slide matches the rear pull-out slide rail at the top of the movable plate; A rear withdrawal pin has one bottom end connected to the rear withdrawal slide and one top end inclined toward the movable mold core. A rear withdrawal hole matching the rear withdrawal pin is provided at the bottom of the fixed mold plate.

5. The fixed mold side movable cavity injection mold according to claim 1, characterized in that: The forward core pulling assembly includes: A front-drawing slide is provided on the front side of the movable platen and extends obliquely upward; a front pumping cylinder fixed on the front pumping slide; A front-drawing slider is slidably disposed on the front-drawing slide and connected to the output end of the front-drawing cylinder; The front draw plate has a side surface close to the movable mold core as a fitting surface, and the fitting surface fits with the movable mold core to form a through-hole portion.

6. The fixed mold side movable cavity injection mold according to claim 5, characterized in that: The outer side surface of the front drawer plate is a first guiding inclined surface, and the inner wall of the fixed template is a second guiding inclined surface matching the first guiding inclined surface.

7. The fixed mold side movable cavity injection mold according to claim 2, characterized in that: The inclined top assembly includes: a retaining seat fixed to the jacking plate; A lifting rod is arranged obliquely, the bottom of which is slidably connected to the retaining seat, and the top of which passes through the movable platen and is connected to the corresponding movable insert on the side of the movable mold core; Lift the lifting plate, the two lifting rods move upward and approach each other under the guidance of the movable template. While the top of the lifting rod lifts the handrail upward, the two movable inserts approach each other and separate from the inner side wall of the handrail.

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