A rapid mold stripping device for automobile plastic part mold

Abstract

The application discloses a kind of quick ejection device for automobile plastic part mould, including mould, a pair of electric cover plate, resonance ball, air fan and electromagnet, mould middle is provided with forming groove, multiple ejector pin installation grooves are set in forming groove inner end, vibration ejector pin is fixedly connected in ejector pin installation groove, vibration groove is set in vibration ejector pin upper end, the present application can be realized by electromagnet magnetic force control to resonance ball is repelled, and the elasticity and tenacity of combination vibration spring and elastic cord are combined, so that resonance ball can move up and down, to this inside finished product in mould is impacted to produce the effect of vibration, by the clearance between the vibration of finished product itself and forming groove inner wall, so that finished product demoulding is more relaxed and convenient, simultaneously in the vibration process of resonance ball, and lower air fan is driven and drives surrounding air to surge into forming groove, to further accelerate the demoulding of finished product, effectively improve the quick ejection of automobile plastic part mould, greatly improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of automotive mold technology, and more specifically, to a rapid ejection device for automotive plastic part molds. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, molds are tools used to shape objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of objects by changing the physical state of the material being molded. They are often referred to as the "mother of industry." Injection molding is a method of shaping industrial products. Products are usually made using rubber injection molding and plastic injection molding.

[0003] Plastic molds are tools used in the plastics processing industry in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions. Due to the wide variety of plastics and processing methods, as well as the varying complexity of plastic molding machines and plastic products, there are also many different types and structures of plastic molds.

[0004] After the plastic parts are formed, existing automotive plastic parts molds require manual removal by processing personnel. Due to the tight connection between the parts and the mold, removal is difficult, which not only easily damages the plastic parts during operation but also reduces processing efficiency.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a quick ejection device for automotive plastic parts molds. Summary of the Invention

[0006] The purpose of this invention is to provide a quick ejection device for automotive plastic parts molds to solve the above-mentioned problems.

[0007] To achieve the above objectives, an embodiment of the present invention provides the following technical solution:

[0008] A rapid ejection device for automotive plastic part molds includes a mold, a pair of electric cover plates, a resonant ball, an air fan, and an electromagnet. The mold has a forming groove in the middle, and multiple ejector pin mounting grooves are formed at the inner end of the forming groove. Vibrating ejector pins are fixedly connected to the ejector pin mounting grooves, and each vibrating ejector pin has a vibration groove at its upper end. The electric cover plates are rotatably connected to the inner wall of the vibration groove. A pair of hidden grooves matching the electric cover plates are formed on the inner wall of the vibration groove. A central rod is fixedly connected to the inner end of the vibration groove. An extension groove is formed at the upper end of the resonant ball, and the central rod passes through the extension groove and extends... Extending to the outer end, the resonant ball is slidably connected to the outer end of the extension groove. A vibration spring is sleeved on the outer end of the central rod, and the vibration spring is located below the resonant ball. A pair of elastic ropes are fixedly connected to the inner end of the extension groove, and the upper ends of the elastic ropes are fixedly connected to the central rod. The air fan is located below the resonant ball. A pair of connecting rods are fixedly connected to the lower end of the resonant ball. The air fan is fixedly connected to the lower end of the pair of connecting rods. The electromagnet is fixedly connected to the inner wall of the lower end of the vibration groove, and the electromagnet is located below the resonant ball. A pair of air inlets are opened in the middle of the vibration pin, and the air inlets are connected to the vibration groove.

[0009] As a further improvement of the present invention, the electric cover plate includes a pair of electric rotating shafts, the electric rotating shafts being fixedly connected to the inner wall of the vibration groove, and the pair of electric rotating shafts being rotatably connected to a flat cover plate at one end close to each other.

[0010] As a further improvement of the present invention, the central rod includes a sliding rod, which is fixedly connected to the lower inner wall of the vibration groove, and an auxiliary ball is fixedly connected to the upper end of the sliding rod.

[0011] As a further improvement of the present invention, the resonant ball includes a soft bladder, which is slidably connected to the outer end of the central rod. The soft bladder is provided with a filling block, a ferromagnetic block and a pressure sensor, and the filling block is located between the ferromagnetic block and the pressure sensor.

[0012] As a further improvement of the present invention, the filling block includes a soft block disposed inside the soft capsule, and the soft block has a plurality of vacuum cavities in the middle, and the vacuum cavities are provided with self-vibrating balls.

[0013] As a further improvement of the present invention, the air fan includes a pair of load-bearing plates, the load-bearing plates are fixedly connected to the lower end of the connecting rod, a pair of connecting blocks are fixedly connected in the middle of the pair of load-bearing plates, and a vibrating fan blade is slidably connected to the outer end of the pair of connecting blocks. A weak spring is provided at one end of the vibrating fan blade near the load-bearing plate, and the weak spring is wrapped around the outer end of the connecting block. Hollow grooves are opened in the middle of the load-bearing plates and the vibrating fan blades, and the central rod and the vibrating spring are both located in the middle of the hollow grooves.

[0014] As a further improvement of the present invention, the upper half of the vibrating pin and the vibrating groove are both trumpet-shaped.

[0015] As a further improvement of the present invention, the elastic cord is made of one of the high-toughness composite materials of PVC, SBS, and CPE.

[0016] As a further improvement of the present invention, both the soft capsule and the soft block are made of one of the following high-elasticity materials: EVA and EPDM.

[0017] As a further improvement of the present invention, both the vibration spring and the weak spring are made of non-ferromagnetic materials.

[0018] Compared with the prior art, the advantages of this invention are:

[0019] This solution uses the magnetic force of an electromagnet to repel a resonant ball, combined with the elasticity and resilience of a vibration spring and a tension rope, allowing the resonant ball to move up and down. This impacts the finished product inside the mold, generating vibration. The vibration of the finished product creates a gap between itself and the inner wall of the molding groove, making demolding easier and more convenient. Simultaneously, during the vibration of the resonant ball, the air fan below is activated, drawing surrounding air into the molding groove, further accelerating demolding. This effectively improves the speed of demolding of automotive plastic parts molds and greatly increases work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of the mold of the present invention;

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of the ejector pin of the present invention;

[0023] Figure 4 This is a schematic diagram of the initial front cross-sectional structure of the ejector pin of the present invention;

[0024] Figure 5 This is a schematic diagram of the front cross-sectional structure of the resonant sphere of the present invention;

[0025] Figure 6 This is a front cross-sectional view of the air fan structure of the present invention.

[0026] Explanation of the labels in the diagram:

[0027] 1. Mold; 2. Molding groove; 3. Ejector pin mounting groove; 4. Vibrating ejector pin; 5. Electric cover plate; 51. Electric rotating shaft; 52. Flat cover plate; 6. Hidden groove; 7. Center rod; 71. Sliding rod; 72. Auxiliary ball; 8. Resonant ball; 81. Soft bladder; 82. Filler block; 821. Soft block; 822. Vacuum chamber; 823. Self-vibrating ball; 83. Ferromagnetic block; 84. Pressure sensor; 9. Connecting rod; 10. Air fan; 101. Load-bearing plate; 102. Connecting block; 103. Vibrating fan blade; 104. Weak spring; 105. Hollow groove; 11. Vibrating spring; 12. Elastic rope; 13. Electromagnet; 14. Air inlet. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Example 1:

[0030] Please see Figure 1-6 A rapid ejection device for automotive plastic parts molds includes a mold 1, a pair of electric cover plates 5, a resonant ball 8, an air fan 10, and an electromagnet 13. The mold 1 has a molding groove 2 in the middle, and multiple ejector pin mounting grooves 3 are formed at the inner end of the molding groove 2. Vibrating ejector pins 4 are fixedly connected in the ejector pin mounting grooves 3. The mold is ejected by the vibrating ejector pins 4. This method is consistent with existing technology and will not be elaborated here. A vibration groove is formed at the upper end of the vibrating ejector pin 4. Both the upper part of the vibrating ejector pin 4 and the vibration groove are funnel-shaped. This funnel-shaped design facilitates the generation of vibration within the subsequent vibration groove. During vibration, air is dispersed and injected into the molding groove 2, which facilitates subsequent demolding. The electric cover plate 5 is rotatably connected to the inner wall of the vibration groove. The inner wall of the vibration groove has a pair of hidden grooves 6 that match the electric cover plate 5. The electric cover plate 5 includes a pair of electric rotating shafts 51, which are fixedly connected to the inner wall of the vibration groove. The two electric rotating shafts 51 are rotatably connected to a flat cover plate 52 at one end close to each other. The electric rotating shafts 51 control the rotation of the flat cover plate 52, so that the electric cover plate 5 is in the closed state during injection molding and in the open state during demolding, and is stored in the hidden groove 6.

[0031] A central rod 7 is fixedly connected to the inner end of the vibration groove. The central rod 7 includes a sliding rod 71, which is fixedly connected to the lower inner wall of the vibration groove. An auxiliary ball 72 is fixedly connected to the upper end of the sliding rod 71. The auxiliary ball 72 blocks the upper end of the sliding rod 71, thereby effectively limiting the resonant ball 8 and preventing the resonant ball 8 from falling off during vibration.

[0032] The resonant ball 8 has an extension groove at its upper end. The central rod 7 passes through the extension groove and extends to the outer end. The resonant ball 8 is slidably connected to the outer end of the extension groove. By moving up and down at the outer end of the central rod 7, the resonant ball 8 impacts the finished product, generating vibration and creating a certain gap between the finished product and the inner wall of the molding groove 2, thus facilitating subsequent demolding. The resonant ball 8 includes a soft bladder 81, which is slidably connected to the outer end of the central rod 7. The soft bladder 81 contains a filling block 82, a ferromagnetic block 83, and a pressure sensor 84. The pressure sensor 84 allows the resonant ball 8 to sense the pressure upon impact. When the sensed impact force decreases, it indicates that the finished product is beginning to be demolded. Subsequently, the power supply to the electromagnet 13 is disconnected, causing the resonant ball 8 to stop impacting, thereby saving costs. The ferromagnetic block 83, under the action of the electromagnet 13 being switched on and off, and the vibration spring 11 and... Under the force of the tension rope 12, the resonant ball 8 moves up and down, thereby impacting the finished product and generating vibration. The filling block 82 is located between the ferromagnetic block 83 and the pressure sensor 84. The filling block 82 includes a soft block 821, which is located inside the soft bag 81. Multiple vacuum cavities 822 are opened in the middle of the soft block 821. Self-vibrating balls 823 are placed in the vacuum cavities 822. The self-vibrating balls 823 move unsteadily in the vacuum cavities 822, thereby giving the resonant ball 8 a certain vibration effect. This further enables the resonant ball 8 to impact and vibrate the finished product. Both the soft bag 81 and the soft block 821 are made of one of the high-elasticity materials EVA and EPDM. The use of high-elasticity materials can not only effectively prevent the resonant ball 8 from damaging the finished product, but also improve the vibration effect generated by the impact.

[0033] A vibration spring 11 is sleeved on the outer end of the center rod 7, and the vibration spring 11 is located below the resonant ball 8. A pair of elastic ropes 12 are fixedly connected to the inner end of the extension groove. The elastic force of the vibration spring 11 can make the resonant ball 8 return to its original position after being pressed down. At the same time, under the tension of the vibration spring 11, the resonant ball 8 can be quickly pulled back when it is pulled down. Combined with the force of the vibration spring 11, the resonant ball 8 can play a good impact vibration role. The elastic ropes 12 are made of one of the high-toughness composite materials of PVC, SBS and CPE, and the upper end of the elastic ropes 12 is fixedly connected to the center rod 7. The high-toughness composite material can effectively prevent the elastic ropes 12 from breaking, and at the same time has good elasticity.

[0034] The air fan 10 is located below the resonant sphere 8. The air fan 10 includes a pair of load-bearing plates 101, which are fixedly connected to the lower end of the connecting rod 9. A pair of connecting blocks 102 are fixedly connected between the two load-bearing plates 101. Vibrating fan blades 103 are slidably connected to the outer ends of the connecting blocks 102. A weak spring 104 is provided at one end of the vibrating fan blade 103 near the load-bearing plate 101, and the weak spring 104 is wound around the outer end of the connecting block 102. Hollow grooves 105 are opened in the middle of both the load-bearing plate 101 and the vibrating fan blade 103. The central rod 7 and the vibrating spring 11 are connected to the vibrating fan blade 103. Both are located in the middle of the hollow groove 105. The resonant ball 8 drives the air fan 10 to move up and down, while the vibrating fan blade 103 moves up and down, squeezing air into the gap generated by the vibration, so that it can be better demolded. At the same time, under the elastic support of the weak spring 104, the vibrating fan blade 103 can be repeatedly and continuously moved by inertia during the movement. Both the vibrating spring 11 and the weak spring 104 are made of non-ferromagnetic materials. The selection of non-ferromagnetic materials can prevent them from being affected by the magnetic force of the electromagnet 13, thereby affecting their own function.

[0035] A pair of connecting rods 9 are fixedly connected to the lower end of the resonant ball 8. An air fan 10 is fixedly connected to the lower end of the pair of connecting rods 9. An electromagnet 13 is fixedly connected to the inner wall of the lower end of the vibration groove, and the electromagnet 13 is located below the resonant ball 8. A pair of air inlets 14 are opened in the middle of the vibration ejector pin 4, and the air inlets 14 are connected to the vibration groove. The resonant ball 8 is attracted by the intermittent on and off power of the electromagnet 13, so that the resonant ball 8 can be pressed down. At the same time, under the action of the vibration spring 11 and the tension rope 12, it moves up and down to impact the finished product and generate vibration, thereby facilitating demolding.

[0036] Working principle:

[0037] When demolding, first energize the electromagnet 13 to pull down the resonant ball 8, then control the electric cover plate 5 to open, then start the vibrating ejector pin 4 to demold, and disconnect the power supply to the electromagnet 13, so that the resonant ball 8 moves up and down under the force of the vibrating spring 11 and the tension rope 12, and impacts the finished product to generate vibration. By intermittently turning the electromagnet 13 on and off, the resonant ball 8 is repeatedly impacted and vibrated. If a gap is formed between the finished product and the inner wall of the molding groove 2, the air fan 10 vibrates up and down at the same time as the vibration and moves the surrounding air into the gap, thereby greatly improving the demolding speed. To reset, the operation can be repeated.

[0038] Compared with the prior art, the advantages of this invention are:

[0039] This solution uses the magnetic force of the electromagnet 13 to repel the resonant ball 8, and combines the elasticity and toughness of the vibration spring 11 and the tension rope 12 to allow the resonant ball 8 to move up and down, thereby impacting the finished product in the mold 1 and generating vibration. The vibration of the finished product itself creates a gap between itself and the inner wall of the molding groove 2, making demolding easier and more convenient. At the same time, during the vibration of the resonant ball 8, the air fan 10 below is driven and drives the surrounding air to rush into the molding groove 2, thereby further accelerating the demolding of the finished product, effectively improving the rapid demolding of automotive plastic parts molds and greatly improving work efficiency.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A quick ejection device for automotive plastic parts molds, characterized in that: include: Mold (1), the mold (1) has a forming groove (2) in the middle, and a plurality of ejector pin mounting grooves (3) are provided at the inner end of the forming groove (2), and a vibrating ejector pin (4) is fixedly connected in the ejector pin mounting groove (3); Electric cover plate (5), and there is a pair of them. The upper end of the vibrating pin (4) is provided with a vibration groove. The electric cover plate (5) is rotatably connected to the inner wall of the vibration groove. The inner wall of the vibration groove is provided with a pair of hidden grooves (6) that match the electric cover plate (5). The inner end of the vibration groove is fixedly connected with a central rod (7). A resonant ball (8) has an extension groove at its upper end. A central rod (7) passes through the extension groove and extends to the outer end. The resonant ball (8) is slidably connected to the outer end of the extension groove. A vibration spring (11) is sleeved on the outer end of the central rod (7) and is located below the resonant ball (8). A pair of elastic ropes (12) are fixedly connected to the inner end of the extension groove, and the upper end of the elastic ropes (12) is fixedly connected to the central rod (7). An air fan (10) is located below a resonant ball (8). A pair of connecting rods (9) are fixedly connected to the lower end of the resonant ball (8). The air fan (10) is fixedly connected to the lower end of the pair of connecting rods (9). An electromagnet (13) is fixedly connected to the inner wall of the lower end of the vibration groove, and the electromagnet (13) is located below the resonance ball (8). A pair of air inlets (14) are opened in the middle of the vibration pin (4), and the air inlets (14) are connected to the vibration groove.

2. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The electric cover plate (5) includes a pair of electric rotating shafts (51), which are fixedly connected to the inner wall of the vibration groove. The pair of electric rotating shafts (51) are rotatably connected to a flat cover plate (52) at one end close to each other.

3. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The central rod (7) includes a slide rod (71), which is fixedly connected to the inner wall of the vibration groove, and an auxiliary ball (72) is fixedly connected to the upper end of the slide rod (71).

4. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The resonant ball (8) includes a soft capsule (81), which is slidably connected to the outer end of the central rod (7). The soft capsule (81) is provided with a filling block (82), a ferromagnetic block (83) and a pressure sensor (84), respectively. The filling block (82) is located between the ferromagnetic block (83) and the pressure sensor (84).

5. A quick ejection device for automotive plastic parts molds according to claim 4, characterized in that: The filling block (82) includes a soft block (821), which is located inside the soft capsule (81). The soft block (821) has multiple vacuum cavities (822) in the middle, and a self-vibrating ball (823) is provided in the vacuum cavity (822).

6. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The air fan (10) includes a pair of load-bearing plates (101), which are fixedly connected to the lower end of the connecting rod (9). A pair of connecting blocks (102) are fixedly connected in the middle of the pair of load-bearing plates (101). Vibrating fan blades (103) are slidably connected to the outer ends of the pair of connecting blocks (102). A weak spring (104) is provided at one end of the vibrating fan blade (103) near the load-bearing plate (101), and the weak spring (104) is wrapped around the outer end of the connecting block (102). Hollow grooves (105) are opened in the middle of the load-bearing plate (101) and the vibrating fan blade (103), and the central rod (7) and the vibration spring (11) are both located in the middle of the hollow groove (105).

7. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The upper part of the vibrating pin (4) and the vibrating groove are both trumpet-shaped.

8. The quick ejection device for automotive plastic parts molds according to claim 1, characterized in that: The elastic cord (12) is made of one of the high-toughness composite materials of PVC, SBS, and CPE.

9. A quick ejection device for automotive plastic part molds according to claim 5, characterized in that: Both the soft capsule (81) and the soft block (821) are made of one of the following high-elasticity materials: EVA and EPDM.

10. A quick ejection device for automotive plastic parts molds according to claim 6, characterized in that: Both the vibration spring (11) and the weak spring (104) are made of non-ferromagnetic materials.

Images