Device for preventing mold from sinking

Abstract

The utility model discloses a device for preventing a die from sinking, which comprises a supporting plate, the die comprises a fixed die and a movable die, the supporting plate comprises a fixed end and a guide end, the fixed end is fixed at the bottom of the fixed die, and the guide end protrudes out of the fixed die and faces the movable die; a wear-resistant plate is mounted on one side of the fixed end facing the fixed mold. According to the technical scheme, the supporting plate is mounted at the bottom of the fixed mold, that is, in the relative movement process of the fixed mold and the movable mold, the part, protruding out of the fixed mold, of the supporting plate can play a role in lifting and supporting the fixed mold, and the problem that the movable mold sinks and inclines due to the large weight is solved. And under the supporting action of the supporting plate, the movable mold and the fixed mold can be accurately closed, so that the forming processing of a product is not influenced, mold ash pulling is reduced, the product strain condition is reduced, and the product rejection rate is reduced. The movable mold sinks and inclines to slide on the supporting plate, and after the wear-resisting plate is installed at the guide end, friction to the supporting plate can be reduced, and the service life of the supporting plate is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold processing in injection molding machines, and particularly relates to a device for preventing mold sinking. Background Art

[0002] With the improvement of living standards, as a common means of transportation, the requirements for lamp installation and the product quality itself on automobiles are getting higher and higher. Even a very small misalignment during production will cause great product quality and installation problems.

[0003] Nowadays, the shapes of lamp products are becoming more and more complex, and the requirements for mold accuracy are also getting higher and higher. Generally, if the moving mold of the mold is too heavy, it will cause the wallboard of the injection molding machine on the moving mold side to tilt, resulting in mold sinking. Eventually, it will cause mold ash pulling, product scratching, and affect the accuracy and service life of the mold itself. In the prior art, in order to prevent mold sinking, square guide posts and precise positioning are usually added to the side of the mold moving mold to support the weight of the mold.

[0004] It is necessary to ensure that the mating surface of the mold core cannot be scratched, otherwise it will cause mold ash pulling and damage the mold, resulting in product quality problems such as product scratching and flash. The prior art is to add square guide posts and precise positioning to the side of the mold moving mold to support the weight of the mold. However, the positions where square guide posts can be installed on the side are limited, and the sizes are also limited. Too many and too large square guide posts will affect the automatic picking of the manipulator on the machine table. Moreover, the square guide posts only rely on the wear-resistant plate connected above to bear the force, and the wear-resistant plate connected below will sink along with the machine table tilt and the mold, and simply cannot play a supporting role. The same is true for the precise positioning on the mold frame, and the contact surface is too small, the effective stroke is short, and the strength is not enough, and it is easy to deform under force. Summary of the Utility Model

[0005] In order to solve the technical problem in the background art that the moving mold in the injection molding machine will sink due to its large weight and affect processing, the purpose of the utility model is to provide a device for preventing mold sinking, which can solve the above problems.

[0006] The technical solution for achieving the purpose of the utility model is: a device for preventing mold sinking, including a support plate. The mold includes a fixed mold and a moving mold. The support plate includes a fixed end and a guiding end. The fixed end is fixed at the bottom of the fixed mold, and the guiding end protrudes from the fixed mold and faces the moving mold; a wear-resistant plate is installed on the side of the fixed end facing the fixed mold.

[0007] In this technical solution, a support plate is installed at the bottom of the stationary mold. That is, during the relative movement of the stationary mold and the moving mold, the part of the support plate protruding from the stationary mold can support the stationary mold, preventing the moving mold from sinking and tilting due to its large weight, and even preventing the injection molding machine wallboard from tilting. Under the support of the support plate, the moving mold and the stationary mold can be accurately clamped, which will not affect the molding process of the product, reduce mold dusting, reduce product scratching and reduce the product rejection rate, and lower the production and mold repair costs. In actual operation, when the moving mold sinks and tilts, it will slide and rub on the support plate. After installing a wear-resistant plate on the guiding end, the friction on the support plate can be reduced, and the service life of the support plate can be extended.

[0008] Further, an oil groove is provided on the wear-resistant plate, and lubricating oil is coated in the oil groove to reduce the friction force of the bottom of the moving mold on the support plate. This not only facilitates the sliding of the moving mold on the support plate, but also reduces the frictional wear of the wear-resistant plate.

[0009] Further, the oil grooves are evenly arranged on the wear-resistant plate, that is, the wear-resistant plate is covered with oil grooves to prevent large friction and serious wear at positions without oil grooves.

[0010] Further, the wear-resistant plate can be fixed to the support plate in a liftable manner. For example, if the thick wear-resistant plate becomes thinner after wear, or due to the problem of the sinking and tilting angle of the moving mold, the height of the wear-resistant plate can be adjusted as needed to better suit the horizontal sliding of the moving mold.

[0011] Further, threaded mounting holes are provided on the wear-resistant plate, and screws are installed in the threaded mounting holes. The wear-resistant plate is fixed to the support plate through the cooperation of the screws and the threaded mounting holes. The screws can be screwed in the threaded mounting holes as needed to adjust the distance between the wear-resistant plate and the support plate. When needed, spacers can also be added between the wear-resistant plate and the support plate to improve stability and supporting force.

[0012] Further, a protruding portion is provided on the support plate, and a mounting groove corresponding to the protruding portion is provided at the bottom of the stationary mold. The protruding portion is installed in the mounting groove, and the installation can be fixed by bolts. The installation and fixation effect of the protruding portion in the mounting groove is better, and it can provide better supporting force for the guiding end.

[0013] Further, the material of the wear-resistant plate is P20 mold steel, which has high strength and sufficient toughness, and can provide effective support to prevent the moving mold from sinking and tilting.

[0014] Further, the length of the guiding end is not less than the stroke of the stationary mold, that is, when the moving mold and the stationary mold are separated, the moving mold is always located on the support plate, reducing the problem that the sinking and tilting angle of the moving mold is too large after it detaches from the support plate and it cannot slide on the support plate again for accurate clamping.

[0015] Further, an arc-shaped chamfer is provided at the end of the wire end facing the moving die, which provides a smooth transition when the moving die is initially lapped on the pallet or when the moving die is disengaged from the pallet and then reset to the pallet again.

[0016] By adopting the above technical solutions, the utility model has the following beneficial effects:

[0017] (1) A pallet for supporting the moving die is added at the bottom of the fixed die, which provides a supporting force when the moving die sinks and tilts due to its large weight, preventing the sinking and tilting angle from being too large and affecting the accurate processing of the product;

[0018] (2) A wear-resistant plate is added on the pallet to reduce the frictional loss of the moving die on the pallet during sliding and improve the service life of the pallet;

[0019] (3) An oil groove for installing lubricating oil is provided on the wear-resistant plate to improve the sliding effect of the moving die on the wear-resistant plate and reduce friction and loss;

[0020] (4) The wear-resistant plate is of a liftable structure and can be adjusted to different heights as needed to better support the moving die;

[0021] (5) One end of the pallet is a convex part, and a corresponding installation groove is provided at the bottom of the fixed die. The convex part is fixedly installed in the installation groove, and such a fixing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to be clearly understood, the following further detailed description of the utility model is given according to specific embodiments in conjunction with the drawings, where

[0023] Figure 1 is a schematic structural diagram of the pallet in the utility model;

[0024] Figure 2 is a schematic side view structural diagram of the pallet in the utility model;

[0025] Figure 3 is a schematic structural diagram of the sinking and tilting of the moving die of the mold in the utility model;

[0026] Figure 4 is a schematic structural diagram of the mold closing after the pallet is installed on the fixed die in the utility model;

[0027] Figure 5 is another schematic structural diagram of the mold closing after the pallet is installed on the fixed die in the utility model.

[0028] The reference numerals in the drawings are: 1 pallet; 2 fixed mold; 3 moving mold; 4 fixed end; 5 guiding end; 6 wear-resistant plate; 7 oil groove; 8 screw; 9 convex portion; 10 arc-shaped chamfer; 11 injection molding machine wall panel; 12 bolt; 13 installation groove. Detailed implementation mode

[0029] Embodiment:

[0030] As Figures 1 - 5 shown, this embodiment provides a device for preventing the mold from sinking, including a pallet 1. The mold includes a fixed mold 2 and a moving mold 3. The pallet 1 includes a fixed end 4 and a guiding end 5. The fixed end 4 is fixed to the bottom of the fixed mold 2, and the guiding end 5 protrudes from the fixed mold 2 and faces the moving mold 3; a wear-resistant plate 6 is installed on one side of the fixed end 4 facing the fixed mold 2. In this technical solution, a pallet 1 is installed at the bottom of the fixed mold 2, that is, during the relative movement of the fixed mold 2 and the moving mold 3, the part of the pallet 1 protruding from the fixed mold 2 can support the fixed mold 2, preventing the moving mold 3 from sinking and tilting due to its large weight, and even driving the injection molding machine wall panel 11 to tilt. Under the support of the pallet 1, the moving mold 3 and the fixed mold 2 can be accurately closed, which will not affect the forming and processing of the product, reduce the mold dusting, reduce the product scratching situation and reduce the product rejection rate, and reduce the production and mold repair costs. In actual operation, when the moving mold 3 sinks and tilts, it will slide and friction on the pallet 1. After installing the wear-resistant plate 6 on the guiding end 5, the friction on the pallet 1 can be reduced, and the service life of the pallet 1 can be extended.

[0031] As Figure 1 shown, an oil groove 7 is provided on the wear-resistant plate 6, and lubricating oil is coated in the oil groove 7 to reduce the friction between the bottom of the moving mold 3 and the pallet 1, which is not only convenient for the moving mold 3 to slide on the pallet 1, but also reduces the friction loss of the wear-resistant plate 6. The oil grooves 7 are evenly arranged on the wear-resistant plate 6, that is, the wear-resistant plate 6 is covered with oil grooves 7 to prevent large friction and serious wear at positions without oil grooves 7.

[0032] Preferably, the wear-resistant plate 6 can be fixed on the pallet 1 in a liftable manner. For example, if the thick wear-resistant plate 6 wears and becomes thinner, or due to the problem of the sinking and tilting angle of the moving mold 3, the height of the wear-resistant plate 6 can be adjusted as needed to better adapt to the horizontal sliding of the moving mold 3. The wear-resistant plate 6 has threaded mounting holes, and screws 8 are installed in the threaded mounting holes. The wear-resistant plate 6 is fixed on the pallet 1 through the cooperation of the screws 8 and the threaded mounting holes. The screws 8 can be screwed in the threaded mounting holes as needed to adjust the distance between the wear-resistant plate 6 and the pallet 1. When needed, pads can also be added between the wear-resistant plate 6 and the pallet 1 to improve stability and support force.

[0033] As Figure 2 andFigure 4 As shown, the pallet 1 has a convex portion 9, and the bottom of the fixed mold 2 has a mounting groove 13 corresponding to the convex portion 9. The convex portion 9 is installed in the mounting groove 13, and the installation can be fixed by bolts 12. The installation and fixation effect of the convex portion 9 in the mounting groove 13 is better, and it can provide better supporting force for the wire end.

[0034] Preferably, the wear-resistant plate 6 is made of P20 die steel, which has high strength and sufficient toughness, and can provide effective support for preventing the moving mold 3 from sinking and tilting.

[0035] Preferably, the length of the guiding end 5 is not less than the stroke of the fixed mold 2, that is, when the moving mold 3 and the fixed mold 2 are separated, it is always located on the pallet 1, reducing the problem that the sinking and tilting angle of the moving mold 3 is too large after it detaches from the pallet 1 and it cannot slide on the pallet 1 again and accurately close the mold. An arc-shaped chamfer 10 is provided at the end of the wire end facing the moving mold 3, which provides a smooth transition when the moving mold 3 first lapped on the pallet 1 or when the moving mold 3 detaches from the pallet 1 and then resets to the pallet 1 again.

[0036] Working principle: First, install the wear-resistant plate 6 with an oil groove 7 at the wire end of the pallet 1, then insert the convex portion 9 of the fixed end 4 into the mounting groove 13 on the fixed mold 2 and fix it with bolts 12; then apply lubricating oil in the oil groove 7. During the initial mold closing, the bottom of the moving mold 3 slides onto the pallet 1 through the arc-shaped chamfer 10 of the guiding end 5, and reciprocating sliding such as mold closing - opening - mold closing is performed within the range of the guiding end 5.

[0037] In the above specific embodiments, the purpose, technical solution and beneficial effects of the present invention have been further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preventing the mold from sinking, characterized in that, It includes a supporting plate (1). The mold includes a fixed mold (2) and a movable mold (3). The supporting plate (1) includes a fixed end (4) and a guiding end (5). The fixed end (4) is fixed to the bottom of the fixed mold (2), and the guiding end (5) protrudes from the fixed mold (2) and faces the movable mold (3). A wear-resistant plate (6) is installed on one side of the fixed end (4) facing the fixed mold (2).

2. The anti-sinking device for a mold according to claim 1, characterized in that, An oil groove (7) is provided on the wear-resistant plate (6), and lubricating oil is coated in the oil groove (7).

3. The anti-sinking device for a mold according to claim 2, characterized in that, The oil grooves (7) are evenly arranged on the wear-resistant plate (6).

4. A device for preventing die sinking according to claim 1, characterized in that, The wear-resistant plate (6) is fixedly installed on the supporting plate (1) in a liftable manner.

5. The anti-sinking device for a mold according to claim 4, wherein, Threaded mounting holes are provided on the wear-resistant plate (6), and screws (8) are installed in the threaded mounting holes. The wear-resistant plate (6) is fixed to the supporting plate (1) through the cooperation of the screws (8) and the threaded mounting holes.

6. The anti-sinking device for a mold according to claim 1, wherein A protruding portion (9) is provided on the supporting plate (1), and a mounting groove (13) corresponding to the protruding portion (9) is provided at the bottom of the fixed mold (2). The protruding portion (9) is installed in the mounting groove (13).

7. The anti-sinking device for a mold according to claim 1, wherein, The material of the wear-resistant plate (6) is P20 mold steel.

8. The anti-sinking device for a mold according to claim 1, wherein, The length of the guiding end (5) is not less than the stroke of the fixed mold (2).

9. The anti-sinking device for a mold according to claim 1, characterized in that, An arc-shaped chamfer (10) is provided at the end of the guiding end (5) facing the movable mold (3).

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