Injection mold for automotive adjustment buttons and its injection method

Abstract

This invention discloses an injection mold for automotive adjustment buttons and its injection method, relating to the field of machining technology. The mold includes a base, on which a connecting seat is fixedly mounted. A ring is fixedly mounted on the connecting seat via a connecting rod. An inner block is rotatably mounted on the inner wall of the ring, and an injection tube is fixedly mounted on the inner block. A raw material frame is mounted on the injection tube. A side frame is vertically slidably mounted on the inner block. A top plate is fixedly mounted on the top of the side frame, and a protrusion is fixedly mounted on the top plate. A square block is fixedly mounted on the bottom of the side frame, and a rotating shaft is rotatably mounted inside the square block. A mold body is fixedly mounted on the rotating shaft. This invention allows raw material to enter the mold during loading. After filling, the raw material injection stops, and the mold cools simultaneously. While cooling, the mold moves to the unloading position, where it is removed and flipped to unload the material.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to an injection mold for automotive adjustment buttons and its injection molding method. Background Technology

[0002] In the manufacturing process of automobiles, many adjustment buttons are usually used to connect internal components. Automobile buttons are usually manufactured using injection molding. During injection molding, molten raw materials are injected into the mold and then cooled and solidified.

[0003] In existing injection molds, raw materials are typically extruded into the mold via an auger. After the mold cools, the internal button is formed and released. However, during the cooling process, the mold needs to wait for the internal finished product to cool before it can be detached. Even though car buttons are small, the cooling process still takes several seconds or even tens of seconds, which prolongs the entire processing time and reduces processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for automotive adjustment buttons and a method thereof for injection molding, so as to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection mold for an automotive adjustment button, comprising a base, a connecting seat fixedly mounted on the base, and a ring fixedly mounted on the connecting seat via a connecting rod;

[0006] An inner block is rotatably mounted on the inner wall of the ring, an injection tube is fixedly mounted on the inner block, and a raw material frame is mounted on the injection tube.

[0007] A side frame is vertically slidably mounted on the inner block. A top plate is fixedly mounted on the top of the side frame. A protrusion is fixedly mounted on the top plate. A square block is fixedly mounted on the bottom of the side frame. A rotating shaft is rotatably mounted inside the square block. A mold body is fixedly mounted on the rotating shaft.

[0008] A connecting frame is fixedly installed on the ring, a top ring is fixedly installed on the connecting frame, and a first displacement rod is fixedly installed at the bottom end of the top ring;

[0009] A friction plate is fixedly installed at the bottom end of the inner block;

[0010] The inner block has through holes inside.

[0011] Preferably, a return spring is fixedly installed between the bottom end of the top plate and the inner block.

[0012] Preferably, the friction plate is L-shaped.

[0013] Preferably, chamfers are provided at both ends of the first displacement rod.

[0014] Preferably, the through hole is in the shape of "宀".

[0015] A connecting bar is vertically and slidably installed inside the inner block. A first slider is fixedly installed on the connecting bar. A baffle is horizontally and slidably installed inside the inner block. A second slider is fixedly installed on the baffle. Hypotenuses are provided at one ends of the first slider and the second slider that are close to each other.

[0016] A positioning plate is fixedly installed on the connecting seat. A positioning ring is fixedly installed on the positioning plate. A second displacement rod is fixedly installed on the positioning ring.

[0017] A first spring is fixedly installed between the second slider and the inner block.

[0018] Preferably, a fixing frame is fixedly installed on the connecting rod. A vertical plate is fixedly installed on the fixing frame. A sliding plate is vertically and slidably installed on the vertical plate. A long rod is vertically and slidably installed on the sliding plate. A pressing plate is fixedly installed at the bottom end of the long rod.

[0019] A first friction wheel is fixedly installed on the injection pipe. A second friction wheel is rotatably installed on the fixing frame. The first friction wheel and the second friction wheel are in contact with each other. A screw rod is fixedly installed on the second friction wheel. The screw rod threadedly penetrates through the sliding plate.

[0020] A servo motor is installed inside the vertical plate. An output shaft is fixedly installed at the output end of the servo motor. A belt is drivingly installed between the output shaft and the injection pipe.

[0021] Preferably, a second spring is fixedly installed between the sliding plate and the pressing plate.

[0022] Preferably, a plurality of round blocks are fixedly installed at the bottom end of the first displacement rod.

[0023] Preferably, a limiting block is fixedly installed on the side wall of the inner block. A limiting ring is provided on the inner wall of the circular ring.

[0024] An injection molding method for an automotive adjustment button injection mold includes the following steps:

[0025] S1: Heat the raw materials to a molten state and then add them into the raw material frame.

[0026] S2: Start the servo motor to make the inner block rotate, so that the two mold bodies automatically reciprocate and switch between the feeding position and the discharging position, thereby performing automatic feeding and discharging.

[0027] S3: The pressure plate descends synchronously to squeeze the material in the material frame, making it easier for it to enter the through hole;

[0028] S4: The conveyor belt starts to transport the manufactured buttons.

[0029] In the above technical solution, the present invention provides an injection mold for an automotive adjustment button and an injection method thereof, which has the following beneficial effects: In this application, by rotating the inner block, the raw material can be automatically injected into the mold. At the same time, the mold is provided with two sets, and when the two sets of molds rotate, they enter the loading position and the unloading position respectively. At the same time, the injected raw material will automatically cut off the injection process or open, so that the raw material can enter the mold when loading. After the injection is full, the raw material injection stops and is cooled. While cooling, the mold enters the unloading position, and the mold is moved away and flipped in the unloading position to unload the material. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0031] Figure 1 This is a three-dimensional structural schematic diagram provided for an embodiment of the present invention;

[0032] Figure 2 Provided for embodiments of the present invention Figure 1 Partial structural diagram;

[0033] Figure 3 This is a partial structural schematic diagram of the ring provided in an embodiment of the present invention;

[0034] Figure 4-6 These are partial structural schematic diagrams of the inner blocks provided in the embodiments of the present invention;

[0035] Figure 7 This is a schematic diagram of a through-hole structure provided in an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Base; 2. Connecting seat; 31. Connecting rod; 32. Ring; 33. Inner block; 33.1. Through hole; 34. Injection tube; 35. Connecting frame; 36. Top ring; 37. First displacement rod; 38. Top plate; 39. Protrusion; 310. Side frame; 311. Square block; 312. Mold body; 313. Friction plate; 41. Connecting strip; 42. Positioning ring; 43. Second displacement rod; 44. First slider; 45. Second slider; 46. Baffle; 47. Positioning plate; 51. Fixing frame; 52. Fixing ring; 53. First friction wheel; 54. Second friction wheel; 55. Screw; 56. Slide plate; 57. Long rod; 58. Pressure plate; 59. Raw material frame; 510. Vertical plate; 511. Belt; 512. Output shaft; 6. Conveyor belt; 7. Cooling hole. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Please see Figure 1-7 An injection mold for an automotive adjustment button and its injection method, comprising a base 1, a connecting seat 2 fixedly mounted on the base 1, and a ring 32 fixedly mounted on the connecting seat 2 via a connecting rod 31;

[0040] An inner block 33 is rotatably mounted on the inner wall of the ring 32. An injection tube 34 is fixedly mounted on the inner block 33. A raw material frame 59 is mounted on the injection tube 34.

[0041] A side frame 310 is vertically slidably mounted on the inner block 33. A top plate 38 is fixedly mounted on the top of the side frame 310. A protrusion 39 is fixedly mounted on the top plate 38. A square block 311 is fixedly mounted on the bottom of the side frame 310. A rotating shaft is rotatably mounted inside the square block 311. A mold body 312 is fixedly mounted on the rotating shaft.

[0042] A connecting bracket 35 is fixedly installed on the ring 32, a top ring 36 is fixedly installed on the connecting bracket 35, and a first displacement rod 37 is fixedly installed at the bottom end of the top ring 36.

[0043] A friction plate 313 is fixedly installed at the bottom of the inner block 33;

[0044] The inner block 33 has a through hole 33.1 inside;

[0045] The bottom of the inner block 33 is provided with two sets of mold bodies 312. One set of mold bodies 312 can inject injection liquid into the inner block 33 when the inner block 33 rotates, and the other set of molds can allow the injection liquid inside to cool down before passively lowering it.

[0046] The mold body 312 is provided with a loading position and a discharging position. When the mold body 312 is at the loading position, the through hole 33.1 injects raw materials into the mold body 312. When the mold body 312 rotates to the discharging position, with the rotation of the inner block 33, the mold body 312 will first descend passively and then rotate, so that the opening of the mold body 312 faces downward to pour out the formed automotive button inside it.

[0047] When the inner block 33 rotates, as the inner block 33 drives the side frame 310 and the top plate 38 to move, as the convex block 39 on the top plate 38 approaches the first displacement rod 37, the convex block 39 will be squeezed by the first displacement rod 37 and descend. At this time, the side frame 310 will drive the square block 311 and the mold body 312 to descend. At the same time, due to the contact between the rotating shaft and the friction plate 313, the rotating shaft will rotate at this time, so that the mold body 312 will flip when descending.

[0048] In another embodiment of the present invention: a return spring is fixedly installed between the bottom end of the top plate 38 and the inner block 33;

[0049] Through the return spring, when the convex block 39 moves away from the first displacement rod 37, it can push the top plate 38 to rise, so that the side frame 310 drives the mold body 312 to reset.

[0050] In another embodiment of the present invention: the friction plate 313 is L-shaped;

[0051] Among them, referring to Figure 7 , the bottom end of the friction plate 313 is relatively thick. In this way, when the mold body 312 just starts to descend, it will not contact the friction plate 313 until the rotating shaft approaches the thicker position of the friction plate 313. At this time, the rotating shaft will fit with the friction plate 313 and rotate, so that there is a gap between the mold body 312 and the inner block 33 when rotating to facilitate rotation.

[0052] In another embodiment of the present invention: chamfers are provided at both ends of the first displacement rod 37;

[0053] Through the chamfers of the first displacement rod 37, it is convenient to push the inner block 33 to move.

[0054] In another embodiment of the present invention: the through hole 33.1 is in the shape of "宀";

[0055] A connecting bar 41 is vertically and slidably installed inside the inner block 33. A first slider 44 is fixedly installed on the connecting bar 41. A baffle 46 is horizontally and slidably installed inside the inner block 33. A second slider 45 is fixedly installed on the baffle 46. And bevels are provided at the ends of the first slider 44 and the second slider 45 that are close to each other;

[0056] A positioning plate 47 is fixedly installed on the connecting seat 2, a positioning ring 42 is fixedly installed on the positioning plate 47, and a second displacement rod 43 is fixedly installed on the positioning ring 42.

[0057] A first spring is fixedly installed between the second slider 45 and the inner block 33;

[0058] Both ends of the second displacement rod 43 are chamfered. As the inner block 33 rotates, when the mold body 312 is about to enter the unloading position, the connecting strip 41 will first abut against the chamfer of the second displacement rod 43 as it approaches and moves towards it. Then, the connecting strip 41 will rise, driving the first slider 44 to rise. The inclined side of the first slider 44 will then abut against the inclined side of the second slider 45, pushing the second slider 45 to cause the baffle 46 to block the through hole 33.1 above the mold body 312, preventing further material loss. After the button inside the mold body 312 falls off, the protrusion 39 will move away from the first displacement rod 37. At this time, the side frame 310 will be pulled by the reset spring to rise, thereby causing the mold body 312 to rise and the opening of the mold body 312 to fit tightly against the inner block 33. At this time, the connecting strip 41 will leave the second displacement rod 43. Then the first slider 44 will descend, and the first spring will pull the second slider 45 to move and reset, thereby causing the baffle 46 on the second slider 45 to open the through hole 33.1, so that the raw material can fall through the through hole 33.1. At this time, the raw material will flow into the mold body 312 through the through hole 33.1, and the mold body 312 is in the loading position.

[0059] In another embodiment of the present invention: a fixing frame 51 is fixedly installed on the connecting rod 31, a vertical plate 510 is fixedly installed on the fixing frame 51, a sliding plate 56 is vertically slidably installed on the vertical plate 510, a long rod 57 is vertically slidably installed on the sliding plate 56, and a pressure plate 58 is fixedly installed at the bottom end of the long rod 57.

[0060] A first friction wheel 53 is fixedly installed on the injection tube 34, and a second friction wheel 54 is rotatably installed on the fixing frame 51. The first friction wheel 53 and the second friction wheel 54 are in contact with each other. A screw 55 is fixedly installed on the second friction wheel 54, and the screw 55 is threaded through the slide plate 56.

[0061] A servo motor is installed inside the upright plate 510, and an output shaft 512 is fixedly installed at the output end of the servo motor. A belt 511 is installed between the output shaft 512 and the injection tube 34 for transmission.

[0062] The upright plate 510 is provided with ventilation holes for the servo motor to dissipate heat. When working, the servo motor is started. At this time, the servo motor will drive the injection tube 34 to rotate through the output shaft 512 and belt 511. As the injection tube 34 rotates, it will drive the inner block 33 to rotate. At the same time, the injection tube 34 rotates at the bottom of the raw material frame 59. As the injection tube 34 rotates, it will drive the first friction wheel 53 to rotate. The first friction wheel 53 will drive the second friction wheel 54 to rotate. At this time, the second friction wheel 54 will drive the screw 55 to rotate. As the screw 55 rotates, it will drive the slide plate 56 to move down, so that the slide plate 56 will drive the pressure plate 58 to squeeze the raw material in the raw material frame 59. At the same time, a side plate is fixedly installed on the upright plate 510. The side plate is fixed to the raw material frame 59, and the raw material frame 59 can be fixed by the side plate.

[0063] A fixing ring 52 is fixedly installed on the fixing bracket 51, and the injection tube 34 is rotatably installed inside the fixing ring 52.

[0064] In another embodiment of the present invention: a second spring is fixedly installed between the sliding plate 56 and the pressure plate 58;

[0065] When the pressure plate 58 moves down, the sliding of the long rod 57 on the slide plate 56 prevents the slide plate 56 from moving too far down and causing jamming. The elasticity of the second spring ensures that the raw material does not jam after being squeezed into the through hole 33.1.

[0066] In another embodiment of the present invention: a plurality of circular blocks are fixedly installed at the bottom end of the first displacement rod 37;

[0067] When the protrusion 39 slides along the bottom end of the first displacement rod 37, the opening of the mold body 312 is facing downwards. As the protrusion 39 moves, it will continuously contact the round block. When it contacts the round block, the protrusion 39 will move downwards again by a small distance. When it moves away from the round block, it will be pulled upwards by the reset spring. At this time, the mold body 312 will vibrate up and down continuously through several round blocks, making it easier for the button inside the mold body 312 to fall down.

[0068] In another embodiment of the present invention: a limiting block is fixedly installed on the side wall of the inner block 33, and a limiting ring is formed on the inner wall of the ring 32;

[0069] The inner block 33 can rotate within the ring 32 by means of the cooperation of the limiting block and the limiting ring;

[0070] An electric heater can be installed inside the raw material frame 59 to maintain the temperature of the raw material so that it is always in a molten state.

[0071] Furthermore, the pressure plate 58 is provided with a feed port, and a cover is threaded onto the feed port. When the material in the raw material frame 59 is used up, raw material is injected through the feed port, and the cover is placed on the pressure plate 58 when the pressure plate 58 needs to squeeze the raw material.

[0072] The base 1 is equipped with a conveyor belt 6, which transports the removed buttons away.

[0073] Furthermore, the mold body 312 and the inner block 33 are provided with a number of cooling holes 7, and the cooling holes 7 are connected one to one. A cooling fan is installed on the inner block 33, and the air from the cooling fan is blown into the cooling holes 7, thereby cooling and molding the injection material in the mold body 312.

[0074] An injection molding method for an automotive adjustment button injection mold includes the following steps:

[0075] S1: Heat the raw materials to a molten state and then add them into the raw material frame 59;

[0076] S2: Start the servo motor to make the inner block 33 rotate, so that the two sets of mold bodies 312 automatically switch back and forth between the loading position and the unloading position, thereby performing automatic loading and unloading.

[0077] S3: The pressure plate 58 descends synchronously to squeeze the material in the material frame 59, making it easier for it to enter the through hole 33.1;

[0078] S4: Conveyor belt 6 starts to transport the manufactured buttons.

[0079] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An injection mold for an automotive adjustment button, comprising a base (1), characterized in that, A connecting seat (2) is fixedly installed on the base (1), and a ring (32) is fixedly installed on the connecting seat (2) through a connecting rod (31). An inner block (33) is rotatably installed on the inner wall of the ring (32). An injection tube (34) is fixedly installed on the inner block (33), and a raw material frame (59) is installed on the injection tube (34). A side frame (310) is vertically slidably installed on the inner block (33). A top plate (38) is fixedly installed at the top end of the side frame (310). A convex block (39) is fixedly installed on the top plate (38). A square block (311) is fixedly installed at the bottom end of the side frame (310). A rotating shaft is rotatably installed inside the square block (311), and a mold body (312) is fixedly installed on the rotating shaft. A connecting frame (35) is fixedly installed on the ring (32). A top ring (36) is fixedly installed on the connecting frame (35), and a first displacement rod (37) is fixedly installed at the bottom end of the top ring (36). A friction plate (313) is fixedly installed at the bottom end of the inner block (33). A through hole (33.1) is formed inside the inner block (33). The through hole (33.1) is in the shape of "宀". A connecting strip (41) is vertically slidably installed inside the inner block (33). A first slider (44) is fixedly installed on the connecting strip (41). A baffle (46) is horizontally slidably installed inside the inner block (33). A second slider (45) is fixedly installed on the baffle (46), and inclined edges are provided at the ends of the first slider (44) and the second slider (45) that are close to each other. A positioning plate (47) is fixedly installed on the connecting seat (2). A positioning ring (42) is fixedly installed on the positioning plate (47), and a second displacement rod (43) is fixedly installed on the positioning ring (42). A first spring is fixedly installed between the second slider (45) and the inner block (33).

2. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, A return spring is fixedly installed between the bottom end of the top plate (38) and the inner block (33).

3. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, The friction plate (313) is in an L shape.

4. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, Chamfers are provided at both ends of the first displacement rod (37).

5. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, A fixing frame (51) is fixedly installed on the connecting rod (31). A vertical plate (510) is fixedly installed on the fixing frame (51). A sliding plate (56) is vertically slidably installed on the vertical plate (510). A long rod (57) is vertically slidably installed on the sliding plate (56), and a pressing plate (58) is fixedly installed at the bottom end of the long rod (57). A first friction wheel (53) is fixedly installed on the injection tube (34). A second friction wheel (54) is rotatably installed on the fixing frame (51), and the first friction wheel (53) and the second friction wheel (54) are in contact with each other. A screw rod (55) is fixedly installed on the second friction wheel (54), and the screw rod (55) threadedly penetrates through the sliding plate (56). A servo motor is installed inside the vertical plate (510), and an output shaft (512) is fixedly installed at the output end of the servo motor. A belt (511) is installed for transmission between the output shaft (512) and the injection tube (34).

6. The injection mold for automotive adjustment buttons according to claim 5, characterized in that, A second spring is fixedly installed between the sliding plate (56) and the pressure plate (58).

7. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, Several round blocks are fixedly installed at the bottom end of the first displacement rod (37).

8. The injection mold for automotive adjustment buttons according to claim 1, characterized in that, A limiting block is fixedly installed on the side wall of the inner block (33), and a limiting ring is opened on the inner wall of the ring (32).

9. A method for injection molding an automotive adjustment button, wherein the injection mold according to any one of claims 1-8 is used for processing, characterized in that, Includes the following steps: S1: Heat the raw materials to a molten state and then add them into the raw material frame (59); S2: Start the servo motor to make the inner block (33) rotate, so that the two sets of mold bodies (312) automatically switch back and forth between the loading position and the unloading position, thereby automatically loading and unloading. S3: The pressure plate (58) descends synchronously to squeeze the material in the material frame (59), making it easier for it to enter the through hole (33.1); S4: The conveyor belt (6) is started to transport the manufactured buttons.

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