Small core-pulling demolding mechanism for injection mold of electric motorcycle shell

Abstract

The utility model provides a small core-pulling demolding mechanism of an injection mold for an electric motorcycle shell, and belongs to the field of injection molds. The mold comprises a movable mold plate and a fixed mold plate, a mold core is arranged on the movable mold plate, a molding cavity is formed between the mold core and the fixed mold plate, a convex block is arranged in the fixed mold plate and extends into the molding cavity, the outer surface of the convex block is a molding surface, and the convex block is obliquely arranged in the fixed mold plate and is in sliding connection with the fixed mold plate. The fixed mold plate is provided with a transverse movement driver, an output shaft of the transverse movement driver is provided with a guide structure, the guide structure is in sliding connection with the convex block, and the movement of the guide structure can promote the convex block to slide in the fixed mold plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold field especially relates to a small core-pulling demolding mechanism of electric motorcycle part shell injection mold. BACKGROUND

[0002] Injection mold, injection molding is also called injection molding, it is a kind of injection and molding forming method.It is widely used in industrial production and manufacturing.When injection mold is used, the raw material of injection molding can be obtained after forming, cooling and demolding in the mold.The first step in the product demolding process is to wait for the toad skin in the mold cavity to cool to a certain temperature before demolding.The completeness and method of demolding will directly affect the production efficiency of injection molding production.

[0003] When producing electric motorcycle parts, due to the irregular shape of electric motorcycle parts and the presence of multiple grooves or protrusions, the traditional straight or inclined ejection method is not suitable, which can cause the plastic parts to deform, twist or even be damaged during demolding.

[0004] For example, a motorcycle lens injection mold [patent application number: CN202321926121.X] is disclosed in Chinese patent documents, which includes a base, a base plate is fixedly arranged at the top of the base, a plurality of support columns are fixedly arranged at the top of the base plate, a lower mold base is fixedly arranged between the plurality of support columns, a lower mounting seat is fixedly arranged on the surface of the lower mold base, a mounting seat is fixedly arranged on both sides of the top of the base, a guide column is fixedly arranged on both sides of the top of the mounting seat, the utility model discloses a motorcycle lens injection mold, which is connected with four connecting clamping blocks through four connecting clamping seats to preliminarily connect the lower mounting seat and the upper mounting seat, and then two fixed seats are fixed at the connection between the lower mounting seat and the upper mounting seat through four fixing bolts to tightly fix the lower mounting seat and the upper mounting seat, but the demolding method of the mold is the ordinary ejection method, which can easily cause the plastic parts to deform, twist or even be damaged when producing complex parts. Utility model content

[0005] The utility model aims at the above problem, provides a small core-pulling demolding mechanism of electric motorcycle part shell injection mold.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] The utility model provides an electric motorcycle part shell injection mold small core-pulling demoulding mechanism, including movable die plate and fixed die plate, the movable die plate is equipped with the core, the core forms the forming cavity with fixed die plate, the fixed die plate is equipped with the lug, the lug extends into the forming cavity and the outer surface of lug is the forming surface, the lug is obliquely arranged in the fixed die plate and is connected with the fixed die plate slidingly, the fixed die plate is equipped with horizontal displacement driver, the output shaft of horizontal displacement driver is equipped with the guide structure, the guide structure is connected with the lug slidingly, and the movement of guide structure can make the lug slide in the fixed die plate.

[0008] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the guide structure includes a guide block, the lower end surface of the guide block is provided with an obliquely arranged guide groove, the cross section of the guide groove is in the shape of an I-beam, and the lug is slidingly extended into the guide groove and has a shape that is adapted to the shape of the guide groove.

[0009] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the fixed die plate is provided with a transverse sliding groove, the guide block slides in the transverse sliding groove, the horizontal displacement driver is arranged at the opening of the transverse sliding groove, and the output shaft of the horizontal displacement driver extends into the transverse sliding groove and is connected with the guide block.

[0010] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the upper sides of the transverse sliding groove are each provided with a baffle, the baffle extends into the transverse sliding groove, the two sides of the guide block are provided with stepped surfaces that correspond to the baffles and have shapes that are adapted to the baffles, the stepped surfaces are slidingly connected with the corresponding baffles, and the bottom of the guide block is slidingly abutted with the inner wall of the bottom of the transverse sliding groove.

[0011] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the end of the guide block that is close to the horizontal displacement driver is embedded with a slot, and the end of the output shaft of the horizontal displacement driver is provided with a connecting piece that extends into the slot and can move vertically along the slot.

[0012] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the fixed die plate is provided with an injection liquid distribution plate, the injection liquid distribution plate is connected with a plurality of injection pipes, and two of the injection pipes are close to the two ends of the core.

[0013] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, the fixed die plate is provided with a plurality of core-pulling drivers, and the output shafts of the core-pulling drivers extend into the forming cavity.

[0014] In the electric motorcycle part shell injection mold small core-pulling demoulding mechanism, a plurality of ejector rods are arranged in the core, the ejector rods include straight ejector rods and inclined ejector rods, the movable die plate is provided with an ejector plate, the ejector plate is connected with the plurality of ejector rods and is connected with an external driving device.

[0015] In the small core-pulling demolding mechanism of the electric motorcycle part shell injection mold, the ejector plate is slid in the ejector space, and a plurality of slide rods slidably connected with the ejector plate are arranged in the ejector space.

[0016] In the small core-pulling demolding mechanism of the electric motorcycle part shell injection mold, the slide rod is sleeved with an extrusion spring, one end of the extrusion spring abuts against the ejector plate, and the other end abuts against the inner wall of the ejector space or extends into the movable mold plate and abuts against the movable mold plate.

[0017] Compared with the prior art, the electric motorcycle part shell injection mold small core-pulling demolding mechanism has the advantages that:

[0018] 1. In the demolding process, the protrusion is moved out of the forming cavity along its placement direction and disconnected from the plastic part by the working of the transverse drive, so that in the subsequent demolding process, the plastic part around the protrusion will not be affected by the subsequent demolding step, so that the plastic part will not be distorted in the demolding process. In addition, the movement of the protrusion is more stable through the guide structure, which is beneficial to protect the plastic part.

[0019] 2. The upper and lower surfaces of the guide block are connected with the baffle and the bottom inner wall of the transverse sliding groove respectively, so that the movement of the guide block is more stable.

[0020] 3. In the assembly process, only the connecting abutment piece needs to be slid into the slot, and the output shaft of the transverse drive does not need to be fixedly connected with the guide block. In addition, the slot provides a moving space for the connecting abutment piece when the guide block moves, preventing jamming. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the overall structure;

[0022] Figure 2 is Figure 1 is a schematic view of the structure after the hidden part is hidden;

[0023] Figure 3 is Figure 1 is a schematic view of the structure after the hidden part is hidden;

[0024] Figure 4 is a schematic view of the fixed mold plate;

[0025] Figure 5 is a schematic view of the movable mold plate.

[0026] In the figure: movable die plate 10, fixed die plate 11, core 12, forming cavity, protruding block 14, transverse driving device 15, guide structure 16, guide block 17, guide groove 18, transverse sliding groove 19, baffle 20, slotted 21, connecting flaps 22, injection tube 23, core pulling driving device 24, ejector rod 25, ejection plate 26, ejection space 27, slide rod 28, extrusion spring 29, step surface 30. DETAILED DESCRIPTION

[0027] The utility model makes further detailed explanation in combination with the drawings and specific implementation below.

[0028] The utility model provides a kind of small core pulling demoulding mechanism of electric motorcycle part shell injection mold, in combination with Figures 1-5 As shown in the figure, including movable die plate 10 and fixed die plate 11, the movable die plate 10 is equipped with core 12, the core 12 is formed forming cavity with fixed die plate 11, the fixed die plate 11 is equipped with protruding block 14, the protruding block 14 extends into forming cavity and the outer surface of protruding block 14 is forming surface, the protruding block 14 is obliquely arranged in fixed die plate 11 and is slidably connected with fixed die plate 11, the fixed die plate 11 is equipped with transverse driving device 15, the output shaft of transverse driving device 15 is equipped with guide structure 16, the guide structure 16 is slidably connected with protruding block 14, and the movement of guide structure 16 can promote the sliding of protruding block 14 in fixed die plate 11.

[0029] In the embodiment, injection liquid is injected into forming cavity 13 to carry out injection molding, and the injection liquid will be molded around protruding block 14, so the protruding block 14 needs to be moved out of forming cavity 13 along its own placement direction and disconnected with plastic part during demolding process by the work of transverse driving device 15, so that the plastic part will not be distorted during demolding process, and the part molded around protruding block 14 will not be affected by subsequent demolding steps.

[0030] The guide structure 16 includes guide block 17, the lower end surface of guide block 17 is equipped with obliquely arranged guide groove 18, the guide groove 18 is in the shape of H, and the protruding block 14 is slidably extended into the guide groove 18 and the shape is matched with the shape of guide groove 18.

[0031] In the embodiment, the guide block 17 is connected with the transverse driver 15, the transverse driver 15 drives the guide block 17 to move transversely, through the sliding cooperation of the guide block 17 and the convex block 14 in the guide groove 18 and the sliding cooperation of the convex block 14 and the fixed mold plate 11, the convex block 14 is pulled to move upward in the guide groove 18 during the movement of the guide block 17, so that the convex block 14 moves upward in the fixed mold plate 11 along the direction in which the convex block 14 is inclined to be placed, thereby smoothly separating from the plastic part.

[0032] The fixed mold plate 11 is provided with a transverse sliding groove 19, the guide block 17 slides in the transverse sliding groove 19, the transverse driver 15 is arranged at the opening of the transverse sliding groove 19, and the output shaft of the transverse driver 15 extends into the transverse sliding groove 19 and is connected with the guide block 17.

[0033] In the embodiment, the transverse driver 15 is arranged outside the fixed mold plate 11, the guide block 17 slides in the transverse sliding groove 19, and the output shaft of the transverse driver 15 can be directly connected with the guide block 17 without penetrating into the fixed mold plate 11 or other accessories for connection.

[0034] The upper two sides of the transverse sliding groove 19 are respectively provided with a baffle 20, the baffle 20 extends into the transverse sliding groove 19, and the two sides of the guide block 17 are provided with a stepped surface 30 corresponding to the baffle 20 and matched in shape, the stepped surface 30 is in sliding connection with the corresponding baffle 20, and the bottom of the guide block 17 is in sliding abutment with the inner wall of the bottom of the transverse sliding groove 19.

[0035] In the embodiment, the upper and lower surfaces of the guide block 17 are respectively connected with the baffle 20 and the inner wall of the bottom of the transverse sliding groove 19, so that the movement of the guide block 17 is more stable.

[0036] The end of the guide block 17 close to the transverse driver 15 is embedded with a slot 21, and the end of the output shaft of the transverse driver 15 is provided with a connecting abutting piece 22 extending into the slot 21 and being movable along the vertical direction of the slot 21.

[0037] In the embodiment, during assembly, only the connecting abutting piece 22 needs to be slid into the slot 21, and the output shaft of the transverse driver 15 does not need to be fixedly connected with the guide block 17, and in addition, the slot 21 provides a moving space for the connecting abutting piece 22 during the movement of the guide block 17, so as to prevent jamming.

[0038] The fixed mold plate 11 is provided with an injection liquid distribution plate, the injection liquid distribution plate is communicated with a plurality of injection pipes 23, and two of the injection pipes 23 are close to the two ends of the core 12.

[0039] In the embodiment, the plastic part is large in area, so the injection speed is improved by simultaneously injecting through the plurality of injection pipes 23, and the cooling speed of each part of the plastic part is similar when the plastic part is cooled.

[0040] The core pulling driver 24 is arranged on the fixed mold plate 11, and the output shaft of the core pulling driver 24 extends into the forming cavity.

[0041] In the embodiment, the injection liquid also forms a part of the plastic part at the output shaft of the core pulling driver 34, and the core pulling driver 24 and the transverse driver 15 are separated from the movable mold plate 10 and the fixed mold plate 11 first when demolding.

[0042] The ejector plate 26 is arranged in the movable mold plate 10, and the ejector plate 26 is connected with the plurality of ejector rods 25 and connected with an external driving device.

[0043] In the embodiment, the movable mold plate 10 and the fixed mold plate 11 are separated after the core pulling driver 24 and the transverse driver 15 work, and then the external driving device is used to move the ejector plate 26 upwards with the plurality of ejector rods 25 and eject the plastic part to complete demolding.

[0044] The movable mold plate 10 is provided with the ejection space 27, the ejector plate 26 slides in the ejection space 27, and the ejection space 27 is provided with a plurality of sliding rods 28 which are slidingly connected with the ejector plate 26.

[0045] The sliding rod 28 is provided with the extrusion spring 29, one end of the extrusion spring 29 abuts against the ejector plate 26, and the other end abuts against the inner wall of the ejection space 27 or extends into the movable mold plate 10 and abuts against the movable mold plate 10.

[0046] The working principle of the utility model is as follows: the injection liquid is injected into the forming cavity 13 through the plurality of injection pipes 23 to complete injection, the transverse driver 15 is used to move the guide block 17 transversely after the plastic part is cooled, the guide groove 18 and the protruding block 14 are slidingly matched, the protruding block 14 and the fixed mold plate 11 are slidingly matched, the protruding block 14 is pulled to move upwards in the guide groove 18 in the moving process of the guide block 17, so that the protruding block 14 moves upwards in the fixed mold plate 11 along the direction in which the protruding block 14 is placed obliquely, and the protruding block 14 is connected with the plastic part smoothly, the core pulling driver 34 is used to separate the output shaft from the plastic part, then the movable mold plate 10 and the fixed mold plate 11 are separated, the plastic part is still adhered to the core 12, then the external driving device is used to move the ejector plate 26 upwards with the plurality of ejector rods 25 and eject the plastic part to complete demolding.

[0047] The specific embodiments described herein are merely illustrative of the present application. Various modifications or changes can be made to the specific embodiments described herein by those skilled in the art of the present application without departing from the spirit of the present application or the scope of the appended claims.

[0048] Although the terms such as movable mold plate 10, fixed mold plate 11, core 12, molding cavity, protrusion 14, transverse driving device 15, guide structure 16, guide block 17, guide groove 18, transverse sliding groove 19, baffle 20, slotted 21, connecting tab 22, injection tube 23, core pulling driving device 24, ejector rod 25, ejector plate 26, ejection space 27, slide rod 28, extrusion spring 29, step surface 30, etc. are used more frequently herein, the use of these terms is merely for the convenience of describing and explaining the essence of the present application; any interpretation of them as additional limitations is contrary to the spirit of the present application.

Claims

1. An ejector mechanism for small core of injection mold for electric motorcycle part housing, comprising a moving die plate (10) and a fixed die plate (11), characterized in that, The movable mold plate (10) is provided with a core (12), the core (12) and the fixed mold plate (11) form a molding cavity, the fixed mold plate (11) is provided with a protrusion (14), the protrusion (14) extends into the molding cavity, and the outer surface of the protrusion (14) is a molding surface, the protrusion (14) is obliquely arranged in the fixed mold plate (11) and is in sliding connection with the fixed mold plate (11), the fixed mold plate (11) is provided with a transverse driving device (15), the output shaft of the transverse driving device (15) is provided with a guide structure (16), the guide structure (16) is in sliding connection with the protrusion (14), and the movement of the guide structure (16) can drive the protrusion (14) to slide in the fixed mold plate (11).

2. The small core-pulling demolding mechanism of the injection mold for the electric motorcycle part housing according to claim 1, characterized in that, The guide structure (16) comprises a guide block (17), the lower end surface of the guide block (17) is provided with an obliquely arranged guide groove (18), the cross section of the guide groove (18) is in the shape of an I, the protrusion (14) slides into the guide groove (18), and the shape of the protrusion (14) is matched with the shape of the guide groove (18).

3. The small core-pulling demolding mechanism of the injection mold for the electric motorcycle part housing according to claim 2, characterized in that, The fixed mold plate (11) is provided with a transverse sliding groove (19), the guide block (17) slides in the transverse sliding groove (19), the transverse driving device (15) is arranged at the opening of the transverse sliding groove (19), and the output shaft of the transverse driving device (15) extends into the transverse sliding groove (19) and is connected with the guide block (17).

4. The small core-pulling demolding mechanism of the injection mold for the electric motorcycle part housing according to claim 3, characterized in that, The upper two sides of the transverse sliding groove (19) are each provided with a baffle (20), the baffle (20) extends into the transverse sliding groove (19), the two sides of the guide block (17) are provided with stepped surfaces (30) corresponding to the baffles (20) and matched in shape, the stepped surfaces (30) are in sliding connection with the corresponding baffles (20), and the bottom of the guide block (17) is in sliding abutment with the inner wall of the bottom of the transverse sliding groove (19).

5. The small core-pulling demolding mechanism of the injection mold for the electric motorcycle part housing according to claim 4, characterized in that, The end of the guide block (17) close to the transverse driving device (15) is embedded with a slot (21), and the end of the output shaft of the transverse driving device (15) is provided with a connecting abutting piece (22) extending into the slot (21) and being movable along the vertical direction of the slot (21).

6. The small core-pulling ejection mechanism of the injection mold for the electric motorcycle part housing according to claim 1, characterized in that, The fixed mold plate (11) is provided with an injection liquid distribution plate, the injection liquid distribution plate is communicated with a plurality of injection pipes (23), and two of the injection pipes (23) are close to the two ends of the core (12).

7. The small core-pulling ejection mechanism of the injection mold for the electric motorcycle part housing according to claim 1, characterized in that, The fixed mold plate (11) is provided with a plurality of core pulling driving devices (24), and the output shafts of the core pulling driving devices (24) extend into the molding cavity.

8. The small core-pulling ejection mechanism of the injection mold for the electric motorcycle part housing according to claim 1, characterized in that, A plurality of ejector rods (25) are arranged in the core (12), the ejector rods (25) are divided into straight ejector rods and inclined ejector rods, an ejection plate (26) is arranged in the movable mold plate (10), the ejection plate (26) is connected with the plurality of ejector rods (25) and connected with an external driving device.

9. The small core-pulling ejection mechanism of the injection mold for the electric motorcycle part housing according to claim 8, characterized in that, The movable mold plate (10) is provided with an ejection space (27), the ejection plate (26) slides in the ejection space (27), and the ejection space (27) is provided with a plurality of sliding rods (28) in sliding connection with the ejection plate (26).

10. The small core-pulling ejection mechanism of the injection mold for the electric motorcycle part housing according to claim 9, characterized in that, The slide rod (28) is sleeved with an extrusion spring (29), one end of the extrusion spring (29) abuts against the ejection plate (26), and the other end abuts against the inner wall of the ejection space (27) or extends into the movable die plate (10) and abuts against the movable die plate (10).

Images