Adaptive device for thermal deformation of die-casting injection molding system

Abstract

The invention discloses an adaptive device for thermal deformation of a die-casting injection molding system, which comprises a head plate, a second plate and a third plate, a mold is arranged between the head plate and the second plate, a fixed mold is arranged on the head plate, a movable mold is arranged on the second plate, and the second plate is arranged on a movable guide rail and slides along the fixed guide rail to drive the movable mold and the fixed mold to be closed and drive the movable mold to be separated from the fixed mold. A clamping mechanism is arranged between the second plate and the third plate, and a spherical swing mechanism is arranged between the second plate and the third plate and connected with the clamping mechanism in series. According to the invention, the die locking mechanism between the second plate and the third plate is connected in series with the spherical swing mechanism through a die-casting and injection molding machine, so that the die locking mechanism can adapt to parallelism errors between the second plate and the third plate caused by thermal deformation; the mold locking mechanism can adapt to mold parallelism errors caused by thermal deformation and parallelism errors between the first plate and the second plate, and achieves the effects of locking the mold by taking contact surface attachment of the fixed mold and the movable mold and a positioning pin between the fixed mold and the movable mold as references, avoiding water flying, reducing flash and improving the product quality.

Description

Technical Field

[0001] The invention relates to the technical field of die casting and injection molding, and in particular to a device for adapting to thermal deformation of a die casting and injection molding system. Background Art

[0002] The die-casting system and the injection molding system include die-casting molds and die-casting machines, injection molds and injection molding machines, and their structural features are that the fixed and movable molds are respectively installed on the head plate and the second plate, and the mold mounting surfaces of the two plates are parallel to the two mounting planes of the mold. Its working process is mold closing - mold preheating - material heating - injection into mold - mold cooling - mold opening - workpiece ejection. This process is repeated, and the mold and the head plate and the second plate of the mold installation of the die-casting injection molding machine are repeatedly heated and cooled. In this process, due to uneven temperature, the parallelism between the third plate and the second plate in the three-plate machine will change, and the parallelism between the two mounting surfaces of the mold and the mold mounting surfaces of the head plate and the second plate will also change, resulting in lax mold closing, causing flash and thickness size deviations of the pressed parts, and severe problems such as water splashing. For example, "2017208826589" A die-casting mold that prevents water splashing introduces a die-casting mold that prevents water splashing, but this method can only solve the problem of preventing damage, and cannot solve the problems of part quality caused by water splashing, such as flash, size, thickness changes, etc. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a device for adapting to thermal deformation of a die-casting injection molding system, which can effectively solve the deficiencies in the prior art.

[0004] The present invention is realized through the following technical scheme: an adaptive device for thermal deformation of a die-casting injection molding system, the system comprises a head plate, a second plate and a third plate, a mold is arranged between the head plate and the second plate, a fixed mold is arranged on the head plate, a movable mold is arranged on the second plate, the second plate is arranged on the movable guide rail and slides along the fixed guide rail to drive the movable mold and the fixed mold to close the mold, and also drive the movable mold to leave the fixed mold, a locking mechanism is arranged between the second plate and the third plate, the locking force direction is perpendicular to the planes of the head plate, the second plate and the third plate, a spherical swing mechanism and a locking mechanism are arranged in series between the second plate and the third plate, the spherical swing mechanism is composed of a concave spherical panel and a convex spherical panel, the concave spherical surface and the convex spherical surface cooperate with each other, the back of the convex spherical surface of the concave panel is a plane, the back of the convex spherical surface of the convex spherical panel is a plane, and the two planes can be parallel and can swing in all directions.

[0005] As a preferred technical solution, the clamping mechanism is a toggle clamping mechanism.

[0006] As a preferred technical solution, the clamping mechanism is an inclined wedge clamping mechanism.

[0007] As a preferred technical solution, the clamping mechanism is a hydraulic clamping mechanism.

[0008] As a preferred technical solution, the combination of the clamping mechanism and the spherical swing mechanism can be moved to the side of the machine in a direction perpendicular to the clamping direction.

[0009] The invention discloses an adaptive device for thermal deformation of a die-casting injection molding system. The system comprises a head plate, a second plate and a third plate. A mold is arranged between the head plate and the second plate. A fixed mold is arranged on the head plate, and a movable mold is arranged on the second plate. The second plate is arranged on a movable guide rail and slides along the fixed guide rail to drive the movable mold and the fixed mold to close the mold, and also to drive the movable mold to leave the fixed mold. A locking mechanism is arranged between the second plate and the third plate. The direction of the locking force is perpendicular to the planes of the head plate, the second plate and the third plate. The second plate and the movable guide rail can be connected in a floating manner. The second plate can float arbitrarily in a plane perpendicular to the direction of the locking force, and can swing non-parallel to the plane. The floating range is greater than the dislocation caused by thermal deformation of the fixed and movable molds, and the swing range is greater than the inclination angle of the fitting surface of the fixed and movable molds caused by thermal deformation.

[0010] As a preferred technical solution, when the Corinthian column is used as a fixed guide rail for the movement of the two plates, it is composed of an outer frame and two floating plates, and an elastic member is connected between the two plates.

[0011] As a preferred technical solution, when the moving guide rail surface of the two plates is a plane, the two plates are divided into a flat guide rail two-plate outer frame and a floating two-plate. The outer frame is fixed on the moving guide rail, and the floating two plates are connected by an elastic member in the middle of the outer frame.

[0012] As a preferred technical solution, when the moving guide rail surface of the two plates is a plane, an elastic member is provided between the bottom of the two plates and the moving guide rail for floating connection.

[0013] As a preferred technical solution, the lower part of the movable mold is supported by a mold adjustment auxiliary spring and has an adjustable height component to adjust the height of the movable mold.

[0014] As a preferred technical solution, an adjustable height component is provided at the bottom of the elastic member to adjust the height of the movable mold 3 .

[0015] As an optimal technical solution, there is a gap around the two floating plates and the outer frame, and a number of floating springs are installed in the gap in a plane perpendicular to the clamping force direction. There are some stoppers in both directions between the two floating plates and the outer frame in the direction of the clamping force and there is a stopper gap, and a swinging floating spring is installed in the stopper gap.

[0016] The beneficial effects of the present invention are as follows: the present invention connects a spherical swing mechanism in series with the mold locking mechanism between the second plate and the third plate of the die-casting and injection molding machine, so that the mold locking mechanism can adapt to the parallelism error between the second plate and the third plate caused by thermal deformation, and the movable mold assembly part on the second plate is set as a floating second plate, so that the mold locking mechanism can adapt to the mold parallelism error and the parallelism error between the first and second plates caused by thermal deformation. The effect achieved is to lock the mold based on the contact surface fit of the fixed and movable molds and the positioning pins between the fixed and movable molds, thereby eliminating water flying, reducing flash, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of mold clamping of the present invention;

[0019] Figure 2 This is a schematic diagram of the loose mold clamping caused by the uneven thermal deformation of the mold of the present invention;

[0020] Figure 3 It is a schematic diagram of the relative positions of the first and second plates when the mold with uneven thermal deformation of the present invention is evenly closed;

[0021] Figure 4 It is a schematic diagram of the spherical swing mechanism of the present invention;

[0022] Figure 5 It is a schematic diagram of the spherical swing mechanism plus the wedge locking mechanism of the present invention;

[0023] Figure 6 It is a schematic diagram of the spherical swing mechanism plus an independent wedge locking mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of the clamping mechanism of the swing assembly of the three-platen machine of the present invention;

[0025] Figure 8 The movable guide rail is a plan view of the second plate and the movable guide rail of the movable mold of the present invention;

[0026] Fig. 9 A diagram showing the relationship between the swing assembly and the wedge locking mechanism assembly of the present invention and the machine;

[0027] Fig.10 It is a schematic diagram of the swing assembly and the wedge locking mechanism of the present invention moving out of the machine from the crime side, and the two plates and the mold retreating position;

[0028] Fig.11 It is a top view of the swing assembly and the wedge clamping mechanism of the present invention when the machine is moved out of the machine side, and the two plates and the mold are in the retreated position;

[0029] Fig.12 This is a diagram showing the state of the mold being closed by moving two plates of the component of the present invention;

[0030] Fig.13 It is a floating connection diagram of two plates when the movable guide rail of the two plates of the present invention is a plane;

[0031] Fig.14 It is a schematic diagram of the floating connection of two plates when the two-plate moving guide rail of the present invention is a Corinthian column;

[0032] Fig.15 It is a front view of the floating connection of the two plates when the two-plate moving guide rail of the present invention is a Corinthian column;

[0033] Fig.16 It is a position diagram of the Corinth column guide rail frame and the floating second plate elastic member of the present invention;

[0034] Fig.17 It is a position diagram of the flat guide rail second plate outer frame and the floating second plate elastic member of the present invention;

[0035] Fig.18 This is a schematic diagram of the combination of the swing assembly with the wedge locked and the floating two plates of the present invention;

[0036] Fig.19 It is a schematic diagram of the auxiliary spring support for adjusting the integral floating two-plate mold of the present invention;

[0037] Fig. 20 It is a schematic diagram of the auxiliary spring support for adjusting the mold of the Corinth column fixed guide rail and movable guide rail frame of the present invention;

[0038] Fig.21 It is a schematic diagram of the height-adjustable spring base of the present invention; Description of the drawings:

[0040] 1. One plate; 2. Fixed mold; 3. Moving mold; 4. Two plates; 41. Corinth column fixed guide rail moving guide rail frame; 42. Corinth column moving guide rail floating two plates; 43. Overall floating two plates; 44. Flat guide rail two plate outer frame; 45. Flat guide rail floating two plates; 5. Convex spherical swing plate; 6. Concave spherical swing plate; 7. Active inclined wedge; 71. Passive inclined wedge; 72. Passive inclined wedge support plate; 8. Locking mechanism; 9. Three plates; 10. Crossbeam; 11. Two-plate moving guide rail; 12. Two-plate fixed guide rail; 13. Swing locking mechanism bracket; 14. Inclined wedge moving cylinder ; 15. Swing locking assembly moving guide rail; 16. Swing locking assembly moving cylinder; 17. Elastic element; 171. Translation floating spring; 172. Swing floating spring; 18. Corinthian column; 19. Corinthian column fixed guide rail moving guide rail frame mold adjustment auxiliary spring support seat; 20. Mold adjustment auxiliary spring; 21. Adjustable mold adjustment auxiliary spring assembly; 211. Adjustable height horizontal wedge; 212. Adjustable height wedge; 213. Height adjustment nut; 214. Height adjustment screw; 215. Adjustable mold adjustment auxiliary spring base; DETAILED DESCRIPTION

[0041] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0042] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0043] Example 1

[0044] like Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, a square frame is composed of a plate 1, three plates 9 and a crossbeam 10, the fixed mold is installed on the one plate, the movable mold 3 is installed on the second plate, and the lower mold wedge 10 has a two-plate movable guide rail composed of a two-plate fixed guide rail 12 and a two-plate movable guide rail 11. There is a swing locking assembly between the second plate 4 and the third plate 9. The spherical swing part is composed of a concave spherical swing plate 6 and a convex spherical swing plate 5. The locking part is composed of an active wedge 7 and a passive wedge 71, which are placed on the component bracket swing locking mechanism bracket 13. The wedge moving cylinder 14 is installed above the swing locking mechanism bracket 13 to push the active wedge 7 up and down to achieve the purpose of locking or unlocking the mold, and the swing locking mechanism bracket 13 plays the role of the passive wedge support plate 72. Fig.12 There are a swing assembly, a swing locking assembly moving guide rail 15 and a swing locking assembly moving cylinder 16. The swing locking assembly is installed on the swing locking assembly moving guide rail 15. The swing locking assembly moving cylinder 16 can send the clamping mechanism 8 to the space between the second plate 4 and the third plate 9 for clamping. It can also pull the clamping mechanism 8 out of the space between the second plate 4 and the third plate 9, so that the second plate 4 and the movable mold 3 can retreat along the fixed guide rail 12 under the drive of the movable guide rail 11, so that the movable mold 3 and the fixed mold 2 are separated, and the formed space is used for demolding of parts. Fig.10 The second plate 4 and the movable mold 3 are separated from the fixed mold 2 to form a part ejection space. Fig.11 for Fig.10 A top view of Fig.12 This is a top view of the mold after the part is demoulded and re-closed, when the swing locking assembly has not yet entered between the second plate 4 and the third plate 9. This embodiment can adapt to the situation where the parallelism error between the third plate and the second plate is caused by thermal deformation. When the wedge moving cylinder presses the active wedge 7 downward, it is in the mold locking state, and when it pulls it upward, it is in the mold disengaging state. The height adjustment screw 214 can adjust the height of the movable mold 3 so that the cone pins and holes on the movable mold 3 and the fixed mold 2 are aligned in height.

[0045] Example 2

[0046] By replacing the active slanted wedge 7 and the passive slanted wedge 71 in the first embodiment with hydraulic cylinders, the swing and hydraulic components of the swing and clamping assembly can be realized.

[0047] Example 3

[0048] like Fig.13 , Fig.18 , Fig.19 and Fig.21 As shown, the difference from the embodiments 1 and 2 is that a plurality of elastic elements 17 are installed between the integral floating second plate 43 and the movable guide rail 11 so that the second plate 4 and the movable mold 3 can swing or float in a plane perpendicular to the clamping force direction. The positioning of the mold is based on the fitting of the two surfaces of the fixed mold 2 and the fixed mold 3, and the positioning is based on the guide cone pin between the fixed mold 2 and the movable mold 3 in the plane perpendicular to the clamping force direction. This embodiment can adapt to the thermal deformation of the mold and the parallelism error of the first and second plates. Fig.19 There are several mold adjustment auxiliary springs 20 and adjustable mold adjustment auxiliary spring assemblies 21 at the lower part of the middle movable mold 3. The height adjustment screw 214 can adjust the height of the movable mold 3 so that the cone pins and holes on the movable mold 3 and the fixed mold 2 are aligned in height.

[0049] Example 4

[0050] like Fig.14 , Fig.15 As shown, the difference from Example 3 is that in the machine using a Corinthian column 18 as a guide for the movement of the two plates 4, the two plates are divided into an outer frame 41 and a floating two-plate composition with an elastic element support 17 between the two so that the floating two-plate can float in a plane perpendicular to the clamping direction and can swing to adapt to the clamping surfaces of the fixed mold 2 and the movable mold 3, and the change in parallelism caused by thermal deformation. Fig. 20 There is a Coring column fixed guide rail moving guide rail frame mold adjustment auxiliary spring support seat 19 on the Coring column fixed guide rail moving guide rail frame 41, an elastic element 17 is arranged between the Coring column moving guide rail floating second plate 42 and the Coring column fixed guide rail moving guide rail frame 41, a movable mold 3 is arranged on the Coring column fixed guide rail moving guide rail frame 41, and there are several mold adjustment auxiliary springs 20 and adjustable mold adjustment auxiliary spring assembly 21 on the fixed mold 3 and the Coring column fixed guide rail moving guide rail frame mold adjustment auxiliary spring support seat 19. The height adjustment screw 214 can make the adjustable height horizontal wedge 211 move horizontally, so that the adjustable height wedge 212 can be raised and lowered to adjust the height and inclination of the movable mold 3, so as to align the cone pins and holes on the movable mold 3 and the fixed mold 2 in height.

[0051] Example 5

[0052] like Fig.16 , Fig.17 As shown, the difference from Example 3 is that Fig.13 The integral floating second plate 43 and the elastic element 17 are replaced by Figure 7The flat guide rail two-plate outer frame 44, the flat guide rail floating two-plate 45, the translation floating spring 171, and the swing floating spring 172, the flat guide rail two-plate outer frame 44 is fixed on the two-plate moving guide rail 11, the flat guide rail floating two-plate 45 has a gap around the flat guide rail two-plate outer frame 44, and there are several translation floating springs 171 in the gap, the flat guide rail two-plate outer frame 44 and the guide rail floating two-plate 45 have stoppers in both directions in the direction of the clamping force and have a stopper gap, and there are several swing floating springs 172 in the stopper gaps on both sides, which can make the guide rail floating two-plate 45 swing and float.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. An adaptable device for heat deformation of a die-casting injection molding system, the system comprises a head plate, a second plate and a third plate, a mold is arranged between the head plate and the second plate, a fixed mold is arranged on the head plate, a movable mold is arranged on the second plate, the second plate is arranged on the movable guide rail and slides along the fixed guide rail to drive the movable mold and the fixed mold to close the mold, and also to drive the movable mold to leave the fixed mold, a clamping mechanism is arranged between the second plate and the third plate, and the direction of the clamping force is perpendicular to the planes of the head plate, the second plate and the third plate, and the characteristics are as follows: A spherical swing mechanism and a clamping mechanism are connected in series between the second plate and the third plate. The spherical swing mechanism consists of a concave spherical panel and a convex spherical panel. The concave spherical surface and the convex spherical surface cooperate with each other. The back of the convex spherical surface of the concave panel is a plane, and the back of the convex spherical surface of the convex spherical panel is a plane. The two planes can be parallel and can swing in all directions.

2. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 1, characterized in that: The clamping mechanism is a toggle clamping mechanism.

3. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 1, characterized in that: The clamping mechanism is an inclined wedge clamping mechanism.

4. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 1, characterized in that: The clamping mechanism is a hydraulic clamping mechanism.

5. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 1, 3 or 4, characterized in that: The clamping mechanism and the spherical swing mechanism combination can be moved to the side of the machine in a direction perpendicular to the clamping direction.

6. An adaptable device for heat deformation of a die-casting injection molding system, the system comprises a head plate, a second plate and a third plate, a mold is arranged between the head plate and the second plate, a fixed mold is arranged on the head plate, a movable mold is arranged on the second plate, the second plate is arranged on the movable guide rail and slides along the fixed guide rail to drive the movable mold and the fixed mold to close the mold, and also to drive the movable mold to leave the fixed mold, a clamping mechanism is arranged between the second plate and the third plate, and the direction of the clamping force is perpendicular to the planes of the head plate, the second plate and the third plate, and the characteristics are: The two plates are connected in a floating manner to the movable guide rail. The two plates can float arbitrarily in a plane perpendicular to the clamping force direction and can swing non-parallel to the plane. The floating range is greater than the dislocation caused by thermal deformation of the fixed and movable molds, and the swing range is greater than the inclination angle of the fitting surface of the fixed and movable molds caused by thermal deformation.

7. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 6, characterized in that: When the Corinthian column is used as a fixed guide rail for the movement of the two plates, it is composed of an outer frame and two floating plates, and an elastic member is connected between the two plates.

8. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 6, characterized in that: When the moving guide surface of the two plates is a plane, the two plates are divided into a flat guide plate outer frame and a floating two plates. The outer frame is fixed on the moving guide rail, and the floating two plates are connected by an elastic member in the middle of the outer frame.

9. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 6, characterized in that: When the moving guide rail surface of the second plate is a plane, an elastic member is provided between the bottom of the second plate and the moving guide rail for floating connection.

10. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 6, 7 or 8, characterized in that: The lower part of the movable mold is supported by a mold adjustment auxiliary spring and has an adjustable height component to adjust the height of the movable mold.

11. The device for adapting to thermal deformation of a die-casting injection molding system according to claim 9, characterized in that: An adjustable height component is provided at the bottom of the elastic member to adjust the height of the movable mold.

12. The device for adapting to thermal deformation of a die casting and injection molding system according to claim 7 or 8, characterized in that: There is a gap around the floating second plate and the outer frame, and a plurality of floating springs are installed in the gap in a plane perpendicular to the clamping force direction. There are stoppers and stopper gaps in both directions between the floating second plate and the outer frame in the clamping force direction, and a swing floating spring is installed in the stopper gap.

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