Injection mold convenient to demold

Abstract

The utility model discloses an injection mold convenient to demold, which relates to the technical field of automobile ornament production, and comprises a fixed mold, a knocking mechanism and an ejection mechanism, guide vertical shafts are welded on the outer walls of four corners of the top of the fixed mold, and the same top plate is welded on the outer walls of the top ends of the four guide vertical shafts; an air cylinder is fixedly connected to the outer wall of the center of the top of the top plate, a movable plate is fixed to the bottom end of a piston rod of the air cylinder, and a movable mold matched with the fixed mold is fixedly connected to the outer wall of the bottom of the movable plate. According to the utility model, the knocking mechanism is arranged, so that the adhesion between the automotive trim plastic part and the inner wall of the mold is conveniently reduced, and the demolding convenience is improved; the ejection mechanism is arranged, and the automotive trim plastic part formed in the fixed mold is rapidly ejected out through the ejection plate, so that the labor intensity of workers is reduced, the demolding efficiency is improved, the automotive trim plastic part is not prone to being damaged, and the defective rate of the automotive trim plastic part is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile decoration production, in particular to an injection mold which is easy to demould. Background Art

[0002] During the processing of automobile interior plastic parts, the plastic raw liquid is added into the mold through the injection mold, and then injection molding is performed. After molding, the automobile interior plastic parts need to be demolded from the mold surface.

[0003] At present, in the process of demolding automobile interior plastic parts, it is inconvenient to demold due to the strong adhesion between automobile interior plastic parts and the inner wall of the mold, and most of the demolding methods are manual demolding, which not only increases the labor intensity of the staff and has low demolding efficiency, but also increases the danger in the demolding process, which is easy to cause damage to automobile interior plastic parts and increase the defective rate of automobile interior plastic parts, thereby reducing the economic benefits of manufacturers. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an injection mold that is easy to demold, which effectively solves the problem that during the demolding process of the current automobile interior plastic parts, there is strong adhesion between the automobile interior plastic parts and the inner wall of the mold, which makes it inconvenient to demold, and most of the demolding methods are manual demolding, which not only increases the labor intensity of the staff and reduces the demolding efficiency, but also increases the danger in the demolding process, which can easily cause damage to the automobile interior plastic parts, increase the defective rate of automobile interior plastic parts, and thus reduce the economic benefits of the manufacturer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An injection mold that is easy to demould comprises a fixed mold fixedly connected to the outer wall of the top of a workbench, wherein the outer walls of the top four corners of the fixed mold are welded with guide vertical shafts, and the top outer walls of the four guide vertical shafts are welded with the same top plate;

[0007] The top center outer wall of the top plate is fixedly connected with a cylinder, the bottom end of the piston rod of the cylinder is fixed with a movable plate, and the bottom outer wall of the movable plate is fixedly connected with a movable mold adapted to the fixed mold, and also includes a knocking mechanism and an ejection mechanism;

[0008] The knocking mechanism is composed of four evenly distributed knocking components and a controller fixedly connected to the side wall of the workbench, and the knocking components include a slide groove opened on the top of the workbench, a limiting horizontal axis fixedly connected to the slide groove, an iron movable block slidably connected to the limiting horizontal axis, a telescopic spring sleeved on the limiting horizontal axis, an electromagnet fixedly connected to the outer wall of the top of the workbench, and a knocking rod fixedly connected to the upper outer wall of the iron movable block.

[0009] Preferably, the ejection mechanism includes a hand-cranked lifting assembly, an ejection plate sealed and movably connected to the fixed mold, four ejection shafts, and a same lifting plate fixed to the outer walls of the bottom ends of the four ejection shafts.

[0010] Preferably, guide holes are provided at the four corners of the movable plate, the inner walls of the four guide holes are slidably connected to the outer walls of the four guide vertical shafts respectively, and buffer springs are sleeved on the four guide vertical shafts.

[0011] Preferably, the outer wall of the iron movable block is slidably connected to the inner wall of the slide groove, and one end of the knocking rod is in contact with the surface of the fixed mold.

[0012] Preferably, one end of the telescopic spring is fixed to the outer wall of the iron movable block, and the other end of the telescopic spring is fixed to the inner wall of the slide groove.

[0013] Preferably, the hand-cranked lifting assembly includes a slideway opened at the bottom of the workbench, a bidirectional screw rotatably installed in the slideway, two threaded sleeves symmetrically threaded on two opposite threaded ends of the bidirectional screw, two linkage oblique rods symmetrically hinged at the bottom of the two threaded sleeves, and a handwheel fixedly connected to the outer wall of one end of the bidirectional screw.

[0014] Preferably, the outer walls of the two threaded sleeves are slidably connected to the inner wall of the slideway, and the bottom ends of the two linked inclined rods are hinged to the top of the lifting plate.

[0015] Preferably, the top ends of the four ejection shafts pass through the workbench and the fixed mold in sequence, and the top outer walls of the four ejection shafts are welded to the outer walls of the four corners of the bottom of the ejection plate in sequence.

[0016] The beneficial effects of the utility model are:

[0017] 1. A knocking mechanism is provided, which can continuously generate vibrations through the continuous knocking of four knocking rods, thereby facilitating the reduction of adhesion between the automobile interior plastic parts and the inner wall of the mold, thereby improving the convenience of demoulding;

[0018] 2. An ejection mechanism is provided to quickly eject the automobile interior plastic parts formed in the fixed mold through the ejection plate. This not only reduces the labor intensity of the staff and improves the demoulding efficiency, but also reduces the danger during the demoulding process, is not easy to cause damage to the automobile interior plastic parts, reduces the defective rate of automobile interior plastic parts, and thus improves the economic benefits of the manufacturer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 It is a front view planar structure schematic diagram of the utility model as a whole;

[0021] Figure 3 It is a schematic diagram of a top view of a part of four striking components in the utility model;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure of part A;

[0023] Figure 5 It is a three-dimensional enlarged structural schematic diagram of a part of the striking component in the utility model;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the hand-cranked lifting assembly in the utility model;

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure after the hand-cranked lifting component and the lifting plate in the utility model are connected.

[0026] In the figure: 1. workbench; 2. fixed mold; 3. guide vertical axis; 4. ejector plate; 5. cylinder; 6. movable plate; 7. movable mold; 8. limit horizontal axis; 9. iron movable block; 10. telescopic spring; 11. electromagnet; 12. knocking rod; 13. ejector plate; 14. ejector shaft; 15. lifting plate; 16. bidirectional screw; 17. threaded sleeve; 18. linkage oblique rod; 19. hand wheel; 20. buffer spring; 21. controller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1, reference Figure 1-5 , an injection mold for easy demoulding, comprising a fixed mold 2 fixedly connected to the top outer wall of a workbench 1 and a knocking mechanism;

[0029] In this embodiment, the outer walls of the four corners of the top of the fixed mold 2 are welded with guide vertical shafts 3, the top outer walls of the four guide vertical shafts 3 are welded with the same top plate 4, the top center outer wall of the top plate 4 is fixedly connected with a cylinder 5, the bottom end of the piston rod of the cylinder 5 is fixed with a movable plate 6, and the bottom outer wall of the movable plate 6 is fixedly connected with a movable mold 7 adapted to the fixed mold 2;

[0030] Furthermore, guide holes are provided at the four corners of the movable plate 6, and the inner walls of the four guide holes are respectively slidably connected to the outer walls of the four guide vertical shafts 3, and the four guide vertical shafts 3 are sleeved with buffer springs 20;

[0031] In this embodiment, the knocking mechanism is composed of four evenly distributed knocking components and a controller 21 fixedly connected to the side wall of the workbench 1. The knocking components include a slide groove opened on the top of the workbench 1, a limit horizontal shaft 8 fixedly connected in the slide groove, an iron movable block 9 slidably connected to the limit horizontal shaft 8, a telescopic spring 10 sleeved on the limit horizontal shaft 8, an electromagnet 11 fixedly connected to the outer wall of the top of the workbench 1, and a knocking rod 12 fixedly connected to the upper outer wall of the iron movable block 9. The four electromagnets 11 are all electrically connected to the controller 21;

[0032] Furthermore, the outer wall of the iron movable block 9 is slidably connected to the inner wall of the chute, one end of the knocking rod 12 contacts the surface of the fixed mold 2, one end of the telescopic spring 10 is fixed to the outer wall of the iron movable block 9, and the other end of the telescopic spring 10 is fixed to the inner wall of the chute;

[0033] In the specific implementation of this embodiment: the controller 21 controls the four electromagnets 11 to start and generate strong magnetism. At this time, under the effect of the strong magnetism, the four iron movable blocks 9 will be sucked together and the four telescopic springs 10 will be stretched together. Then the four electromagnets 11 are controlled to be closed by the controller 21. At this time, under the effect of the disappearance of the strong magnetism, the four telescopic springs 10 will immediately control the four iron movable blocks 9 to rebound to their original positions. Then, by repeating the above control by the controller 21, the four knocking rods 12 can continuously knock on the four sides of the fixed mold 2, and then the continuous knocking of the four knocking rods 12 can continuously generate vibrations, thereby facilitating the reduction of adhesion between the automobile interior plastic parts and the inner wall of the mold, thereby improving the convenience of demolding.

[0034] Example 2, reference Figure 1-3 and Figure 6-7 This embodiment is optimized on the basis of the first embodiment, specifically: an injection mold for easy demoulding, further comprising an ejection mechanism, the ejection mechanism comprising:

[0035] The ejector plate 13, four ejector shafts 14, and the lifting plate 15 are sealed and movably connected to the fixed mold 2. The top ends of the four ejector shafts 14 pass through the workbench 1 and the fixed mold 2 in sequence. The top outer walls of the four ejector shafts 14 are welded to the outer walls of the four corners of the bottom of the ejector plate 13 in sequence. The bottom outer walls of the four ejector shafts 14 are fixed to the top outer wall of the lifting plate 15.

[0036] A hand-cranked lifting assembly: it includes a slideway provided at the bottom of the workbench 1, a bidirectional screw 16 rotatably installed in the slideway, two threaded sleeves 17 symmetrically threaded on two opposite threaded ends of the bidirectional screw 16, two linkage inclined rods 18 symmetrically hinged at the bottom of the two threaded sleeves 17, and a handwheel 19 fixedly connected to the outer wall of one end of the bidirectional screw 16;

[0037] Furthermore, the outer walls of the two threaded sleeves 17 are slidably connected to the inner wall of the slideway, and the bottom ends of the two linkage inclined rods 18 are hinged to the top of the lifting plate 15;

[0038] During the specific implementation of this embodiment: the bidirectional screw 16 is driven to rotate by the hand wheel 19, and then under the limit of the slideway, the two threaded sleeves 17 threadedly connected with the bidirectional screw 16 will move away from each other, and then under the hinged linkage of the two linked inclined rods 18, the lifting plate 15 will drive the four ejection shafts 14 to move upward, so that the automobile interior plastic parts formed in the fixed mold 2 can be quickly ejected through the ejection plate 13, which not only reduces the labor intensity of the staff and improves the demoulding efficiency, but also reduces the danger in the demoulding process, is not easy to cause damage to the automobile interior plastic parts, reduces the defective rate of automobile interior plastic parts, and thus improves the economic benefits of the manufacturer.

[0039] The working principle of the utility model is as follows: first, the movable mold 7 installed at the bottom of the movable plate 6 is controlled to move downward by the extension of the piston rod of the cylinder 5 to complete the mold closing action with the fixed mold 2. After the mold closing action is completed, the movable plate 6 is controlled to move upward by the contraction of the piston rod of the cylinder 5, so that the movable mold 7 is completely separated from the fixed mold 2, and then the next demolding work can be carried out;

[0040] Secondly, the controller 21 controls the four electromagnets 11 to start and generate strong magnetism. At this time, under the effect of the strong magnetism, the four iron movable blocks 9 will be sucked together and the four telescopic springs 10 will be stretched together. Then, the controller 21 controls the four electromagnets 11 to be turned off. At this time, under the effect of the disappearance of the strong magnetism, the four telescopic springs 10 will immediately control the four iron movable blocks 9 to rebound to their original positions. Then, the controller 21 repeats the above control to allow the four knocking rods 12 to continuously knock on the four sides of the fixed mold 2, and then the continuous knocking of the four knocking rods 12 can continuously generate vibrations, thereby facilitating the reduction of adhesion between the automobile interior plastic parts and the inner wall of the mold, thereby improving the convenience of demolding;

[0041] Finally, the bidirectional screw 16 is driven to rotate by the hand wheel 19, and then under the limit of the slide, the two threaded sleeves 17 threadedly connected with the bidirectional screw 16 will move away from each other, and then under the hinged linkage of the two linked inclined rods 18, the lifting plate 15 will drive the four ejection shafts 14 to move upward, so that the automobile interior plastic parts formed in the fixed mold 2 can be quickly ejected through the ejection plate 13. This not only reduces the labor intensity of the staff and improves the demoulding efficiency, but also reduces the danger in the demoulding process, is not easy to cause damage to the automobile interior plastic parts, reduces the defective rate of automobile interior plastic parts, and thus improves the economic benefits of the manufacturer.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An injection mold that is easy to demould, comprising a fixed mold (2) fixedly connected to the top outer wall of a workbench (1), the top four corner outer walls of the fixed mold (2) are welded with guide vertical shafts (3), and the top outer walls of the four guide vertical shafts (3) are welded with the same top plate (4); The top center outer wall of the top plate (4) is fixedly connected to a cylinder (5), the bottom end of the piston rod of the cylinder (5) is fixed to a movable plate (6), and the bottom outer wall of the movable plate (6) is fixedly connected to a movable mold (7) adapted to the fixed mold (2), characterized in that: It also includes a knocking mechanism and an ejection mechanism; The knocking mechanism is composed of four evenly distributed knocking components and a controller (21) fixedly connected to the side wall of the workbench (1), and the knocking components include a slide slot opened on the top of the workbench (1), a limit transverse shaft (8) fixedly connected to the slide slot, an iron movable block (9) slidably connected to the limit transverse shaft (8), a telescopic spring (10) sleeved on the limit transverse shaft (8), an electromagnet (11) fixedly connected to the outer wall of the top of the workbench (1), and a knocking rod (12) fixedly connected to the upper outer wall of the iron movable block (9).

2. The injection mold for easy demoulding according to claim 1, characterized in that: The ejection mechanism comprises a hand-operated lifting assembly, an ejection plate (13) sealed and movably connected to the fixed mold (2), four ejection shafts (14), and a same lifting plate (15) fixed to the outer walls of the bottom ends of the four ejection shafts (14).

3. The injection mold for easy demoulding according to claim 1, characterized in that: The movable plate (6) is provided with guide holes at the four corners, the inner walls of the four guide holes are respectively slidably connected to the outer walls of the four guide vertical shafts (3), and the four guide vertical shafts (3) are sleeved with buffer springs (20).

4. The injection mold for easy demoulding according to claim 1, characterized in that: The outer wall of the iron movable block (9) is slidably connected to the inner wall of the slide groove, and one end of the knocking rod (12) is in contact with the surface of the fixed mold (2).

5. The injection mold for easy demoulding according to claim 1, characterized in that: One end of the telescopic spring (10) is fixed on the outer wall of the iron movable block (9), and the other end of the telescopic spring (10) is fixed on the inner wall of the slide groove.

6. The injection mold for easy demoulding according to claim 2, characterized in that: The hand-operated lifting assembly comprises a slideway provided at the bottom of a workbench (1), a bidirectional screw (16) rotatably mounted in the slideway, two threaded sleeves (17) symmetrically threadedly connected to two opposite threaded ends of the bidirectional screw (16), two linkage inclined rods (18) symmetrically hinged at the bottom of the two threaded sleeves (17), and a hand wheel (19) fixedly connected to the outer wall of one end of the bidirectional screw (16).

7. The injection mold for easy demoulding according to claim 6, characterized in that: The outer walls of the two threaded sleeves (17) are slidably connected to the inner wall of the slideway, and the bottom ends of the two linked inclined rods (18) are hinged to the top of the lifting plate (15).

8. The injection mold for easy demoulding according to claim 2, characterized in that: The top ends of the four ejection shafts (14) pass through the workbench (1) and the fixed mold (2) in sequence, and the top outer walls of the four ejection shafts (14) are welded to the outer walls of the four corners of the bottom of the ejection plate (13) in sequence.

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