Piston injection mold of automobile air spring
By designing injection molds with structures such as moving modules and fixed modules, and using technologies such as embedded inclined top mechanisms and sliders, one-time molding of the closed end of the automobile air spring piston is achieved, solving the low production efficiency and molding accuracy in the existing technology. The poor problem significantly improves production efficiency and accuracy.
Patent Information
- Application Number
- CN202421099634.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing piston injection molds cannot form the complex structure of automobile air springs in one go, resulting in low production efficiency and low molding accuracy, requiring multiple molding and prone to dimensional errors.
An injection mold including a moving module, a fixed module, a moving core, a fixed core, a splitter, a feed plate, a bottom plate and an ejection mechanism are designed. The piston is realized through an embedded oblique top mechanism and a slider. Single-use molding of the closed end outer wall.
It significantly improves production efficiency, reduces dimensional errors, ensures molding accuracy, and avoids the expansion of errors caused by multiple moldings.
Smart Images
Figure CN222245893U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a piston injection mould for an automobile air spring. Background Art
[0002] The air spring is a sealed container filled with compressed air, which uses the compressibility of gas to achieve its elastic effect. The air spring has ideal nonlinear elastic characteristics. After the car is equipped with a height adjustment device, the height of the car body does not change with the increase or decrease of the load. The spring stiffness can be designed to be lower, and the ride comfort is good.
[0003] The piston is an important component in the air spring that plays the role of compressing air. Currently, pistons on the market are basically plastic parts, and the production of plastic parts must rely on injection molds. Since the structure of the outer wall of the closed end of the piston is relatively complex and interrelated, the existing piston injection mold cannot mold the above structure at one time, but requires secondary or tertiary molding to complete it. Therefore, the production efficiency is low. In addition, multiple molding will inevitably increase the dimensional error, thereby affecting the molding accuracy, which needs further improvement. Utility Model Content
[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a piston injection mold for an automobile air spring which significantly improves the production efficiency and can effectively prevent the expansion of dimensional errors to ensure molding accuracy.
[0005] The technical solution adopted by the utility model to solve the above technical problems is: a piston injection mold for an automobile air spring, comprising a movable module and a fixed module respectively arranged in a front-to-back manner, and also comprising a movable mold core and a fixed mold core respectively embedded in the rear side of the movable module and the front side of the fixed module; also comprising a diverter plate fixed on the front side of the movable module, a feed plate fixed on the front side of the diverter plate, a bottom plate fixed on the rear side of the fixed module, and an ejection mechanism arranged between the fixed module and the bottom plate, characterized in that:
[0006] A molding cavity is provided on the end surface of the movable mold core, and correspondingly, a molding convex block that cooperates with the molding cavity is formed forward on the end surface of the fixed mold core; a cavity hole is provided between the bottom wall of the molding cavity and the bottom surface of the movable mold core, and a detachable core block is also embedded in the cavity hole, and a molding concave cavity is provided at the end of the molding convex block, and correspondingly, a convex hull that cooperates with the molding concave cavity is formed backward at the rear end of the core block;
[0007] Two embedded inclined ejector mechanisms are arranged between the movable mold core and the movable die block and are sequentially distributed along the circumference of the molding cavity. The embedded inclined ejector mechanism includes a slider movably embedded in the movable die block and capable of radial movement in a vertical plane, and a seat block fixed on the rear side of the feed plate;
[0008] A transition block is formed at the rear end of the seat block, and an inclined strip is formed at the rear end of the transition block; two guide holes are provided in the splitter plate, and the transition blocks on the two seat blocks are respectively inserted in the two guide holes, and the slider is provided with inclined slots, and the inclined strips on the two seat blocks are respectively movably plugged into the slots on the two sliders;
[0009] A trapezoidal positioning block is formed outwardly on the outer wall of one side of the sliding block close to the core block, and a trapezoidal forming block is formed outwardly at the end of the trapezoidal positioning block.
[0010] Preferably, two notch cavities are provided on the outer wall of the movable mold core, which respectively cooperate with the sliders in the two embedded inclined lift mechanisms; a trapezoidal groove is provided on the inner wall of the two notch cavities on one side close to the core block, and the two trapezoidal grooves respectively cooperate with the trapezoidal positioning blocks on the sliders in the two embedded inclined lift mechanisms.
[0011] Preferably, the end edge of the molding protrusion is formed with a convex ring located at the periphery of the molding cavity, and the convex ring is provided with two trapezoidal opening grooves respectively cooperating with the trapezoidal molding blocks on the sliders in the two embedded inclined lift mechanisms.
[0012] Preferably, the end of the molding protrusion is further provided with an annular recessed groove located between the protruding ring and the molding cavity.
[0013] Preferably, a positioning sink cavity is provided on the rear outer wall of the movable module, and the movable mold core is embedded and fixed in the positioning sink cavity. Two sliding cavities distributed in sequence along the circumferential direction are provided on the front outer wall of the movable module, and the sliders in the two embedded inclined top mechanisms are movably connected in the two sliding cavities respectively.
[0014] Preferably, a connecting cavity is formed between the inner walls of the two sliding cavities and the positioning sink cavity, and the trapezoidal positioning blocks on the two sliding blocks are respectively arranged in the two connecting cavities.
[0015] Preferably, two protective blocks are embedded between the bottom of the positioning sinker cavity and the front outer wall of the moving module and are respectively located on the inner sides of the two sliding cavities. A limiting groove connected to the outer wall of the protective block is opened on the inner wall of one side of the two sliding cavities close to the center of the positioning sinker cavity, and the limiting groove cooperates with the front side of the end of the trapezoidal positioning block.
[0016] Compared with the prior art, the utility model has the advantages that: the utility model can form the relevant structure located on the outer wall of the closed end on the front side of the piston at one time, without the need for secondary or tertiary forming, thereby significantly improving production efficiency; in addition, it can also effectively prevent the expansion of dimensional errors to ensure forming accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the exploded structural diagram of the right front side of the utility model;
[0018] Figure 2 It is a right rear exploded structural diagram of the movable die block, movable die core and seat block of the utility model;
[0019] Figure 3 It is a left front structural diagram of the dynamic module of the utility model. DETAILED DESCRIPTION
[0020] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0021] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.
[0022] like Figures 1 to 3 As shown, a piston injection mold for an automobile air spring includes a movable module 3 and a fixed module 5 which are respectively arranged in a front-to-back manner, and also includes a movable mold core 4 and a fixed mold core 7 which are respectively embedded in the rear side of the movable module 3 and the front side of the fixed module 5; it also includes a diverter plate 2 fixed to the front side of the movable module 3, a feed plate 1 fixed to the front side of the diverter plate 2, a bottom plate 6 fixed to the rear side of the fixed module 5, and an ejection mechanism (not shown) arranged between the fixed module 5 and the bottom plate 6.
[0023] A molding cavity 41 is provided on the end surface of the movable mold core 4, and correspondingly, a molding protrusion 71 that cooperates with the molding cavity 41 is formed forward on the end surface of the fixed mold core 7; a cavity hole 44 is provided between the bottom wall of the molding cavity 41 and the bottom surface of the movable mold core 4, and a detachable core block 8 is also embedded in the cavity hole 44, and a molding concave cavity 72 is provided at the end of the molding protrusion 71, and correspondingly, a convex hull 81 that cooperates with the molding concave cavity 72 is formed backward at the rear end of the core block 8.
[0024] There are also two embedded inclined lift mechanisms distributed in sequence along the circumference of the molding cavity 41 between the movable mold core 4 and the movable module 3. The embedded inclined lift mechanism includes a slider 9 movably embedded in the movable module 3 to have radial movement in a vertical plane and a seat block 10 fixed on the rear side of the feed plate 1.
[0025] A transition block 101 is formed at the rear end of the seat block 10, and an inclined strip 102 is formed at the rear end of the transition block 101; two guide holes 21 are provided in the diverter plate 2, and the transition blocks 101 on the two seat blocks 10 are respectively inserted into the two guide holes 21; an inclined slot 93 is provided in the slider 9, and the inclined strips 102 on the two seat blocks 10 are respectively movably inserted into the slots 93 on the two sliders 9.
[0026] A trapezoidal positioning block 91 is formed outwardly on the outer wall of one side of the slider 9 close to the core block 8 , and a trapezoidal forming block 92 is formed outwardly at the end of the trapezoidal positioning block 91 .
[0027] Two notch cavities 43 are provided on the outer wall of the movable mold core 4, which respectively cooperate with the sliders 9 in the two embedded inclined ejector mechanisms; a trapezoidal groove 42 is provided on the inner wall of the two notch cavities 43 on one side close to the core block 8, and the two trapezoidal grooves 42 respectively cooperate with the trapezoidal positioning blocks 91 on the sliders 9 in the two embedded inclined ejector mechanisms.
[0028] The end edge of the molding protrusion 71 is formed with a convex ring 73 located at the periphery of the molding cavity 72. The convex ring 73 is provided with two trapezoidal opening grooves 74 that respectively cooperate with the trapezoidal molding blocks 92 on the sliders 9 in the two embedded inclined lift mechanisms.
[0029] The end of the molding protrusion 71 is also provided with an annular recessed groove 75 between the protruding ring 73 and the molding cavity 72 .
[0030] A positioning sink cavity 31 is provided on the rear outer wall of the movable module 3, and the movable mold core 4 is embedded and fixed in the positioning sink cavity 31. Two sliding cavities 32 distributed in sequence along the circumferential direction are provided on the front outer wall of the movable module 3, and the sliders 9 in the two embedded inclined top mechanisms are movably connected in the two sliding cavities 32 respectively.
[0031] A connecting cavity 33 is formed between the inner walls of the two sliding cavities 32 and the positioning sink cavity 31 , and the trapezoidal positioning blocks 91 on the two sliding blocks 9 are respectively arranged in the two connecting cavities 33 .
[0032] Two protective blocks 11 are embedded between the bottom of the positioning cavity 31 and the front outer wall of the moving module 3, and are respectively located on the inner sides of the two sliding cavities 32. A limiting groove 33 connected to the outer wall of the protective block 11 is opened on the inner wall of the two sliding cavities 32 close to the center of the positioning cavity 31. The limiting groove 33 cooperates with the front side of the end of the trapezoidal positioning block 91.
[0033] Working principle: The feed plate 1 and the bottom plate 6 are respectively installed on the action mechanism and the body of the injection molding machine; the feed plate 1 is driven to move backward by means of the action mechanism, and then the moving module 3 is driven to move toward the direction of the fixed module 5 until the two are assembled with each other, so that the molding protrusion 71 on the fixed mold core 7 extends into the molding cavity 41 on the moving mold core 4 (existing technology); in the process of moving the moving module 3 moving backward, it will drive the seat blocks 10 in the two embedded inclined top mechanisms to move synchronously, and then drive the inclined bars 102 on the two seat blocks 10 to slide along the slots 93 on the two sliders 9 respectively, thereby forcing the sliders 9 in the two embedded inclined top mechanisms to move toward the core block 8 until the ends of the trapezoidal positioning blocks 91 on the two sliders 9 pass through the limit grooves 33 and abut against the outer wall of the protective block 11. At this time, the trapezoidal positioning blocks 91 on the two sliders 9 are respectively inserted into the two trapezoidal grooves 42, and the trapezoidal molding blocks 92 on the two sliders 9 are respectively inserted into the two trapezoidal opening grooves 74.
[0034] Afterwards, the molten material enters the movable module 3 through the gates provided in the feed plate 1 and the diverter plate 2, and then enters between the molding protrusion 71 and the molding cavity 41 through the runner provided in the movable module 3. After cooling, the piston 12 is formed; then, the feed plate 1 is driven forward by the action mechanism to drive the movable module 3 away from the fixed module 5, and then the molded (not shown) is ejected forward by the ejection mechanism (not shown) (prior art); during the forward movement process, the movable module 3 will drive the seat blocks 10 in the two embedded inclined ejection mechanisms to reset in the same way.
[0035] The convex ring 73 cooperates with the bottom of the forming cavity 41 to form an annular convex cavity 123 on the outer wall of the front end of the piston 12; the cavity hole 44 and the core block 8 cooperate with each other to form a convex sleeve 121 on the outer wall of the front end of the piston 12; the convex hump 81 and the forming concave cavity 72 cooperate with each other to form a concave surface 124 at the bottom of the convex sleeve 121; the trapezoidal forming blocks 92 on the two sliders 9 form two positioning notches 122 on the annular convex cavity 123.
[0036] The utility model can mold the relevant structure located on the outer wall of the closed end of the front side of the piston 12 at one time without the need for secondary or tertiary molding, thereby significantly improving production efficiency; in addition, it can also effectively prevent the expansion of dimensional errors to ensure molding accuracy.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A piston injection mold for an automobile air spring, comprising a movable module and a fixed module respectively arranged in a front-to-back manner, and a movable mold core and a fixed mold core respectively embedded in the rear side of the movable module and the front side of the fixed module; further comprising a diverter plate fixed to the front side of the movable module, a feed plate fixed to the front side of the diverter plate, a bottom plate fixed to the rear side of the fixed module, and an ejection mechanism arranged between the fixed module and the bottom plate, characterized in that: A molding cavity is provided on the end surface of the movable mold core, and correspondingly, a molding convex block that cooperates with the molding cavity is formed forward on the end surface of the fixed mold core; a cavity hole is provided between the bottom wall of the molding cavity and the bottom surface of the movable mold core, and a detachable core block is also embedded in the cavity hole, and a molding concave cavity is provided at the end of the molding convex block, and correspondingly, a convex hull that cooperates with the molding concave cavity is formed backward at the rear end of the core block; Two embedded inclined ejector mechanisms are arranged between the movable mold core and the movable die block and are sequentially distributed along the circumference of the molding cavity. The embedded inclined ejector mechanism includes a slider movably embedded in the movable die block and capable of radial movement in a vertical plane, and a seat block fixed on the rear side of the feed plate; A transition block is formed at the rear end of the seat block, and an inclined strip is formed at the rear end of the transition block; two guide holes are provided in the splitter plate, and the transition blocks on the two seat blocks are respectively inserted in the two guide holes, and the slider is provided with inclined slots, and the inclined strips on the two seat blocks are respectively movably plugged into the slots on the two sliders; A trapezoidal positioning block is formed outwardly on the outer wall of one side of the sliding block close to the core block, and a trapezoidal forming block is formed outwardly at the end of the trapezoidal positioning block.
2. The piston injection mold of an automobile air spring according to claim 1, characterized in that: Two notch cavities are provided on the outer wall of the movable mold core, which respectively cooperate with the sliders in the two embedded inclined ejector mechanisms; a trapezoidal groove is provided on the inner wall of the two notch cavities on one side close to the core block, and the two trapezoidal grooves respectively cooperate with the trapezoidal positioning blocks on the sliders in the two embedded inclined ejector mechanisms.
3. The piston injection mold for an automobile air spring according to claim 1, characterized in that: The end edge of the molding protrusion is formed with a convex ring located at the periphery of the molding cavity. The convex ring is provided with two trapezoidal opening grooves respectively cooperating with the trapezoidal molding blocks on the sliders in the two embedded inclined lift mechanisms.
4. The piston injection mold for an automobile air spring according to claim 3, characterized in that: The end of the molding protrusion is also provided with an annular recessed groove located between the protruding ring and the molding cavity.
5. The piston injection mold for an automobile air spring according to claim 1, characterized in that: A positioning sink cavity is provided on the rear outer wall of the movable module, and the movable mold core is embedded and fixed in the positioning sink cavity. Two sliding cavities distributed in sequence along the circumferential direction are provided on the front outer wall of the movable module, and the sliders in the two embedded inclined top mechanisms are movably connected in the two sliding cavities respectively.
6. The piston injection mold for an automobile air spring according to claim 5, characterized in that: A connecting cavity is formed between the inner walls of the two sliding cavities and the positioning sink cavity, and the trapezoidal positioning blocks on the two sliding blocks are respectively arranged in the two connecting cavities.
7. The piston injection mold for an automobile air spring according to claim 6, characterized in that: Two protective blocks are embedded between the bottom of the positioning cavity and the front outer wall of the moving module and are respectively located on the inner sides of the two sliding cavities. A limiting groove connected to the outer wall of the protective block is opened on the inner wall of one side of the two sliding cavities close to the center of the positioning cavity. The limiting groove cooperates with the front side of the end of the trapezoidal positioning block.