Mould opening mechanism of double-color rubber injection machine

Abstract

The utility model discloses a mold opening mechanism of a double-color rubber injection machine. The mold opening mechanism comprises a support, a lower mold, an upper mold and a mold opening driving piece, wherein the upper mold and the mold opening driving piece are arranged on the support; the mold opening driving piece drives the upper mold to be opened; the upper die is rotatably installed on the support, the die opening driving piece drives the upper die to rotate, and the lower die is driven by a lifting driving piece to ascend and descend. According to the utility model, the mold opening efficiency is higher, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a mould opening mechanism of a double-color rubber injection machine mould. Background Art

[0002] The applicant's prior application was published on 2023-08-08. Its utility model patent with publication number CN219486455U discloses a demolding structure for a two-color injection rubber mold. The opening and closing structure of the mold is relatively complex. During the implementation process, it is necessary to cooperate with the locking templates on both sides to lock the mold. Each time the mold is opened, the locking templates on both sides need to be opened, and the mold opening drive is used to drive the mold to flip to achieve mold opening. This mold opening structure driving method has more coordination processes, which also affects the mold opening efficiency, so further improvement is needed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a mold opening mechanism for a two-color rubber injection molding machine, which can make the mold opening efficiency higher and improve production efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-color rubber injection molding machine mold opening mechanism, comprising a bracket, a lower mold, an upper mold and a mold opening driving member all mounted on the bracket; the mold opening driving member drives the upper mold to open the mold; the upper mold is rotatably mounted on the bracket, and the mold opening driving member drives the upper mold to rotate, and the lower mold is driven to rise and fall by a lifting driving member.

[0005] As a further improvement of the utility model, the mold opening drive member includes an active member and a driven member, the active member drives the driven member to telescopically move, a rack is provided on the driven member, one end of the upper mold corresponding to the driven member penetrates the bracket and extends out, and the end is fixedly connected with a gear, and the driven member meshes with the gear through the rack to drive the upper mold to rotate.

[0006] As a further improvement of the utility model, the active member is a hydraulic cylinder, and the driven member is a telescopic rod that is inserted into the hydraulic cylinder and cooperates with the hydraulic cylinder for telescoping.

[0007] As a further improvement of the utility model, a shell is provided on the bracket at a position corresponding to the mold opening drive member, and a through hole for passing the follower is provided on the shell, and the through hole cooperates with the follower and guides the follower.

[0008] As a further improvement of the utility model, an ejector plate is arranged in the cavity of the upper mold, and an ejector driving member is also arranged on the upper mold. The ejector driving member is connected to a plurality of guide rods. After the guide rods penetrate into the upper mold, they are fixedly connected to the ejector plate, and the guide rods are telescopically and slidably connected to the upper mold.

[0009] As a further improvement of the utility model, each of the ejection plates corresponds to at least two guide rods, and the guide rods are driven to move synchronously by the ejection driving member.

[0010] As a further improvement of the utility model, the guide rod is connected to the ejection driving member through a connecting plate.

[0011] As a further improvement of the utility model, the ejection drive member includes a drive cylinder and a movable rod, the drive cylinder drives the movable cylinder to move telescopically and move with the connecting plate; the drive cylinder is fixedly connected to the upper mold.

[0012] The beneficial effect of the utility model is that the scheme makes the mold opening structure simpler and more efficient by using the rotation method, and utilizes the lifting action of the lower mold to cooperate with the upper mold, so that the upper mold can be kept at the same height. Only the lower mold needs to be moved, and the upper mold can be opened by rotating, which can effectively increase the mold opening efficiency and thus increase the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the utility model (without one side bracket installed);

[0015] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0016] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0017] Figure 5 It is a three-dimensional schematic diagram of the cross-sectional structure of the utility model.

[0018] Reference numerals: 1. bracket; 2. lower die; 3. upper die; 4. mold opening drive member; 41. active member; 42. driven member; 43. rack; 44. gear; 5. lifting drive member; 6. housing; 61. through hole; 7. ejector plate; 8. ejector drive member; 81. guide rod; 82. connecting plate; 83. drive cylinder; 84. movable rod. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Reference Figure 1-5 As shown,

[0021] A two-color rubber injection molding machine mold opening mechanism comprises a bracket 1, a lower mold 2, an upper mold 3 and a mold opening driving member 4 all mounted on the bracket 1; the mold opening driving member 4 drives the upper mold 3 to open the mold; the upper mold 3 is rotatably mounted on the bracket 1, and the mold opening driving member 4 drives the upper mold 3 to rotate, and the lower mold 2 is driven to rise and fall by a lifting driving member 5.

[0022] This solution is different from the prior art. When opening the mold, this solution only needs to drive the lower mold 2 to move downward through the lifting drive member 5 to separate the lower mold 2 from the upper mold 3, and then drive the upper mold 3 to rotate through the mold opening drive member 4. As the upper mold 3 rotates, the product formed on the upper mold 3 can be easily peeled off and removed. This mold opening method is simple and fast. Compared with the prior art that also requires the locking templates on both sides, it can greatly increase the mold opening efficiency, make the mold opening structure simpler, and reduce the difficulty of component matching.

[0023] Specifically, the mold opening drive member 4 includes an active member 41 and a driven member 42. The active member 41 drives the driven member 42 to telescope and move. A rack 43 is provided on the driven member 42. One end of the upper mold 3 corresponding to the driven member 42 penetrates the bracket 1 and extends out, and the end is fixedly connected with a gear 44. The driven member 42 is meshed with the gear 44 through the rack 43 to drive the upper mold 3 to rotate.

[0024] In this solution, the rotation of the upper mold 3 is achieved through the cooperation of the gear 44 and the rack 43. The rack 43 is located on the driven member 42. The active member 41 is used to drive the driven member 42 to move telescopically, thereby driving the gear 44 to rotate. Since the gear 44 is fixedly connected to the upper mold 3, the rotation of the gear 44 will drive the upper mold 3 to rotate, so that the upper mold 3 performs a mold opening action to expose the molded product.

[0025] When restoring to the next molding, first the upper mold 3 is rotated and restored by driving the driven member 42 through the active member 41, and then the lower mold 2 is driven up by the lifting drive member 5 to combine the lower mold 2 with the upper mold 3, and then the molding is carried out by injecting the raw material in the cavity of the upper mold 3 and the lower mold 2.

[0026] In the above scheme, the active member 41 and the driven member 42 can cooperate to form the structure of the electric push rod, and can also be arranged as follows: the active member 41 is a hydraulic cylinder, and the driven member 42 is a telescopic rod inserted in the hydraulic cylinder and cooperates with the hydraulic cylinder for telescopic operation.

[0027] The hydraulic cylinder cooperates more directly with the telescopic rod and has a greater load-bearing capacity.

[0028] In addition, a shell 6 is set on the bracket 1 at the position corresponding to the mold opening drive 4, that is, the position of the follower 42 of the mold opening drive 4. The through hole 61 on the shell 6 is used as a guide hole for the follower 42, so that the follower 42 and the gear 44 can maintain better meshing. The hole wall of the through hole 61 can provide lateral support and limiting effect for the follower 42, thereby providing better fitting strength.

[0029] An ejector plate 7 is arranged in the cavity of the upper mold 3, and an ejector driving member 8 is also arranged on the upper mold 3. The ejector driving member 8 is connected to a plurality of guide rods 81. The guide rods 81 are fixedly connected to the ejector plate 7 after passing through the upper mold 3, and the guide rods 81 are connected to the upper mold 3 in a telescopic and slidable manner.

[0030] The conventional ejector plate 7 uses an ejector driver 8 to perform an ejection action one-to-one. This operation greatly increases the cost and weight, resulting in an increase in the weight of the upper mold 3, and also increases power consumption. This solution works by driving the guide rod 81 through the ejector driver 8, and uses the extension and contraction of the guide rod 81 to drive the ejector plate 7 to perform an ejection action. Specifically, as shown in the figure, the ejector driver 8 uses an electric push rod or a hydraulic push rod, and uses the extension and contraction of the push rod to cooperate with the connecting plate 82 to perform telescopic movement. The connecting plate 82 is fixed with multiple guide rods 81, and the guide rods 81 are driven to perform telescopic movement, thereby synchronously driving the ejector plate 7 to perform an ejection action. This driving method is low in cost, low in power consumption, and synchronous in driving. When the ejector driver 8 uses a hydraulic push rod, it includes a drive cylinder 83 and a movable rod 84. At this time, the drive cylinder 83 is fixedly connected to the upper mold 3, and then the connecting plate 82 is moved by driving the movable rod 84 to extend and move.

[0031] Reference Figure 4 and 5 As shown in , each ejector plate 7 can correspond to two guide rods 81. In a specific embodiment, the mold cavity is set as a sole mold cavity, and the ejector plate 7 is adapted to the mold cavity and becomes a part of the mold cavity. The ejector plate 7 is also in the shape of a sole. At this time, the guide rods 81 are set corresponding to the length direction of the ejector plate 7, which can make the ejection effect more uniform.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A mold opening mechanism for a two-color rubber injection molding machine, comprising a bracket, a lower mold, an upper mold all mounted on the bracket, and a mold opening driving member; the mold opening driving member drives the upper mold to open the mold; characterized in that: The upper mold is rotatably mounted on the bracket, and the mold opening driving member drives the upper mold to rotate, and the lower mold is driven to rise and fall by a lifting driving member.

2. The mold opening mechanism of the two-color rubber injection molding machine according to claim 1 is characterized in that: The mold opening drive member includes an active member and a driven member. The active member drives the driven member to telescopically move. A rack is provided on the driven member. One end of the upper mold corresponding to the driven member penetrates the bracket and extends out, and the end is fixedly connected with a gear. The driven member meshes with the gear through the rack to drive the upper mold to rotate.

3. The mold opening mechanism of the two-color rubber injection molding machine according to claim 2 is characterized in that: The active member is a hydraulic cylinder, and the driven member is a telescopic rod which is inserted into the hydraulic cylinder and cooperates with the hydraulic cylinder for telescoping.

4. The mold opening mechanism of the two-color rubber injection molding machine according to claim 2 or 3, characterized in that: A housing is arranged on the bracket at a position corresponding to the mold opening driving member, and a through hole for passing the driven member is arranged on the housing, and the through hole cooperates with the driven member and guides the driven member.

5. The mold opening mechanism of the two-color rubber injection molding machine according to claim 1, characterized in that: An ejector plate is arranged in the cavity of the upper mold, and an ejector driving member is also arranged on the upper mold. The ejector driving member is connected to a plurality of guide rods. After the guide rods penetrate into the upper mold, they are fixedly connected to the ejector plate. The guide rods are connected to the upper mold in a telescopic and slidable manner.

6. The mold opening mechanism for a two-color rubber injection molding machine according to claim 5, characterized in that: Each ejection plate corresponds to at least two guide rods, and the guide rods are driven to move synchronously by the ejection driving member.

7. The mold opening mechanism for a two-color rubber injection molding machine according to claim 6, characterized in that: The guide rod is connected to the ejection driving member through a connecting plate.

8. The mold opening mechanism for a two-color rubber injection molding machine according to claim 7, characterized in that: The ejection driving member comprises a driving cylinder and a movable rod. The driving cylinder drives the movable cylinder to move telescopically and moves with the connecting plate. The driving cylinder is fixedly connected to the upper die.

Images