Backoff inclined drawing clamping die

Abstract

The utility model provides a back-off inclined pulling clamping mold, which is used for back-off molding of products and comprises a movable mold and a fixed mold, a molding cavity is arranged between the fixed mold and the movable mold, the fixed mold is fixedly connected with a glue inlet, the glue inlet extends into the molding cavity, the movable mold is fixedly connected with a plurality of straight pulling components, and the straight pulling components extend into the molding cavity. The straight pulling assemblies are matched with one another to drive product back-off forming, the forming cavity is formed between the movable mold and the fixed mold, and the straight pulling assemblies are matched with one another to drive product back-off forming.

Description

Technical Field

[0001] The utility model relates to the field of die casting moulds, in particular to an inverted oblique draw-out die clamping mould. Background Art

[0002] As the structure of existing die-casting products becomes more and more complex, local undercuts will occur during product mold processing. Local undercuts are often achieved through an inclined top structure. The inclined top structure has low cost, but it needs to be used for demolding. During the production process, the friction of the inclined top is large, the loss of the inclined top parts is large, and the mold repair cost is increased.

[0003] At the same time, the inclined top structure is prone to mold jamming and blocking, affecting the mass production of the product.

[0004] like Figure 4 As shown in the figure, due to the large angle between the direction of the slide groove and the inclined ejector block, the friction is large during movement (the same effect is achieved when opening and closing the mold), which leads to easy mold jamming and greater wear of the inclined ejector parts. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an undercut oblique draw-out die mold for undercut molding of products, comprising: a movable mold and a fixed mold, a molding cavity is provided between the fixed mold and the movable mold, the fixed mold is fixedly connected with a glue inlet, and the glue inlet extends into the molding cavity, and the movable mold is fixedly connected with a plurality of straight-pull components, which cooperate with each other to drive the undercut molding of the product.

[0006] Preferably, the straight-pull assembly includes: an undercut molding straight-pull assembly, a demoulding straight-pull assembly, a first position-limiting straight-pull assembly and a second position-limiting straight-pull assembly. The first position-limiting straight-pull assembly limits the second position-limiting straight-pull assembly, and the second position-limiting straight-pull assembly limits the undercut molding straight-pull assembly. The undercut molding straight-pull assembly cooperates with the demoulding straight-pull assembly to drive the product to be demoulded.

[0007] Preferably, the first position-limiting straight-pull assembly comprises: a first oil cylinder fixed on the movable mold, the movable mold is fixedly connected to a U-shaped position-limiting block, and the telescopic rod of the first oil cylinder extends into the movable mold and is provided with a first sliding block cooperating with the second position-limiting straight-pull assembly.

[0008] Preferably, the first position-limiting straight-pull assembly comprises: a first oil cylinder fixed on the movable mold, the movable mold is fixedly connected to a U-shaped position-limiting block, and the telescopic rod of the first oil cylinder extends into the movable mold and is provided with a first sliding block cooperating with the second position-limiting straight-pull assembly.

[0009] Preferably, the second position-limiting straight-pull assembly comprises: a second oil cylinder fixedly arranged on the movable mold, a telescopic rod of the second oil cylinder fixedly connected to a second slider, the second slider is arranged perpendicular to the first slider, and a groove matching the first slider is provided at the bottom of the second slider.

[0010] Preferably, the demoulding straight-pull assembly comprises: a fourth oil cylinder fixedly arranged on the movable mold, a telescopic rod of the fourth oil cylinder fixedly connected to a fourth slider, and a groove for undercut molding is provided between the fourth slider and the third slider.

[0011] Preferably, a movable mold core is fixedly connected inside the movable mold, and the movable mold core is provided with a glue inlet channel connected to the glue inlet, and the glue inlet channel is connected to the molding cavity.

[0012] The utility model has the following advantages:

[0013] 1. A molding cavity is formed between the movable mold and the fixed mold, and multiple straight-pull components cooperate with each other to drive the undercut molding of the product.

[0014] 2. The first limiting component limits the second limiting component, and the second limiting component limits the undercut forming straight-pull component. Through the mutual limiting, the phenomenon of the slider retreating during product processing is reduced, the service life of the mold is increased, and the wear of the mold during product processing is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the inverted oblique draw die in the embodiment of the utility model;

[0017] Figure 2 The local structure of the inverted oblique draw die in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 3 The local structure of the inverted oblique draw die in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 4 It is a schematic diagram of the internal structure of an existing inclined top type forming mold in an embodiment of the utility model.

[0020] In the figure: 1, movable mold 2, fixed mold 3, glue inlet 4, first oil cylinder 5, U-shaped limit block 6, first slide block 7, second oil cylinder 8, second slide block 801, raised portion 9, third oil cylinder 10, third slide block 11, fourth oil cylinder 12, fourth slide block 13, movable mold 1 core 1301, glue inlet channel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The present invention is further described in detail below in conjunction with embodiments and specific implementation methods.

[0023] Example:

[0024] like Figures 1 to 3 As shown, an undercut oblique draw-out die mold is used for undercut molding of products, comprising: a movable mold 1 and a fixed mold 2, a molding cavity is provided between the fixed mold 2 and the movable mold 1, and a glue inlet 3 is fixedly connected to the fixed mold 2, and the glue inlet 3 extends into the molding cavity. A movable mold core 13 is fixedly connected to the movable mold 1, and the movable mold core 13 is provided with a glue inlet channel 1301 connected to the glue inlet 3, and the glue inlet channel 1301 is connected to the molding cavity.

[0025] The movable mold 1 is fixedly connected with a plurality of straight-pull components, and the straight-pull components cooperate with each other to drive the product to be undercut and formed.

[0026] The straight-pull assembly includes: an undercut forming straight-pull assembly, a demoulding straight-pull assembly, a first position-limiting straight-pull assembly and a second position-limiting straight-pull assembly. The first position-limiting straight-pull assembly limits the second position-limiting straight-pull assembly, and the second position-limiting straight-pull assembly limits the undercut forming straight-pull assembly. The undercut forming straight-pull assembly cooperates with the demoulding straight-pull assembly to drive the product to be demoulded.

[0027] The undercut forming straight-pull assembly, the first limit straight-pull assembly and the second limit straight-pull assembly restrict each other, thereby ensuring that the slider will not retreat due to internal pressure during the forming process.

[0028] The first limit straight-pull assembly includes: a first oil cylinder 4 fixed on the movable mold 1, the movable mold 1 is fixedly connected with a U-shaped limit block 5, and the telescopic rod of the first oil cylinder 4 extends into the movable mold 1 and is provided with a first slider 6 that cooperates with the second limit straight-pull assembly.

[0029] The second position-limiting straight-pull assembly includes: a second oil cylinder 7 fixedly arranged on the movable mold 1, a telescopic rod of the second oil cylinder 7 fixedly connected to a second slider 8, the second slider 8 is arranged perpendicular to the first slider 6, and the bottom of the second slider 8 is provided with a groove matching the first slider 6.

[0030] The first oil cylinder 4 drives the first slider 6 and the U-shaped limit block 5 to cooperate with the second limit straight-pull assembly. When the second slider 8 is subjected to a downward retracting force, the first slider 6 and the U-shaped limit block 5 cooperate with the groove of the second slider 8 to support the second slider 8.

[0031] The undercut forming straight-pull assembly includes: a third oil cylinder 9 fixedly arranged on the movable mold 1, a telescopic rod of the third oil cylinder 9 fixedly connected to a third slider 10, the third slider 10 is arranged perpendicular to the second slider 8, and the second slider 8 is provided with a protrusion 801 that cooperates with the third slider 10.

[0032] When the second oil cylinder 7 drives the second slider 8 downward, the raised portion 801 of the second slider 8 is separated from the abutment with the third slider 10. At this time, the telescopic rod of the third oil cylinder 9 drives the third slider 10 to be ejected and drives the third slider 10 to be separated from the undercut structure of the product, thereby achieving successful demoulding of the product undercut.

[0033] The demoulding straight-pull assembly includes: a fourth oil cylinder 11 fixedly arranged on the movable mold 1, a telescopic rod of the fourth oil cylinder 11 fixedly connected to a fourth slider 12, and a groove for undercut molding is provided between the fourth slider 12 and the third slider 10. The fourth oil cylinder 11 drives the fourth slider 12 to move, thereby achieving successful demoulding of the product and the slider.

[0034] When the mold is opened, the fixed mold 2 is driven upward, so that the mold core is in a separated state, which is convenient for the robot to grasp the product. The first oil cylinder 4 is pulled back to drive the first slider 6 to disengage from the groove of the second slider 8, so that the second slider 8 is out of the limited state.

[0035] The second oil cylinder 7 is in the retracted state, so that the second slider 8 retracts, driving the protrusion 801 of the second slider 8 to break away from the limit of the third slider 10, so that the third slider 10 can perform an ejection movement.

[0036] The third oil cylinder 9 is in the ejection state, so that the product is successfully detached from the inverted state, and the fourth oil cylinder 11 is in the retracting state so that the fourth slider 12 is retracted, thereby realizing the demoulding of the slider and the product.

[0037] The first oil cylinder 4, the second oil cylinder 7 and the third oil cylinder 9 are all fixedly connected with a limiter and two limit blocks, and the limiter and the limit blocks cooperate to control the movement range of the oil cylinder.

[0038] The ejector rod of the die-casting machine performs ejection movement, allowing the product to be separated from the mold core, and the robot drives the product to be separated from the mold.

[0039] When the mold is closed, the die-casting machine drives the top plate to pull back, so that the ejector pin returns to its original position, and the movable mold 1 and the fixed mold 2 move to the mold closing state.

[0040] The third oil cylinder 9 drives the third slide block 10 back to the initial position, the second oil cylinder 7 drives the second slide block 8 back to the initial position, and the first oil cylinder 4 drives the first slide block 6 back to the initial position.

[0041] Therefore, various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

1. An undercut oblique draw card mold, used for undercut molding of products, comprising: A movable mold and a fixed mold, a molding cavity is provided between the fixed mold and the movable mold, a glue inlet is fixedly connected to the fixed mold, and the glue inlet extends into the molding cavity, and is characterized in that a plurality of straight-pull components are fixedly connected to the movable mold, and the straight-pull components cooperate with each other to drive the product to be undercut and molded; The straight-pull assembly comprises: an undercut forming straight-pull assembly, a demoulding straight-pull assembly, a first position-limiting straight-pull assembly and a second position-limiting straight-pull assembly, wherein the first position-limiting straight-pull assembly limits the second position-limiting straight-pull assembly, and the second position-limiting straight-pull assembly limits the undercut forming straight-pull assembly, and the undercut forming straight-pull assembly cooperates with the demoulding straight-pull assembly to drive the product to be demoulded; The first position-limiting straight-pull assembly comprises: a first oil cylinder fixed on the movable mold, the movable mold is fixedly connected with a U-shaped position-limiting block, and the telescopic rod of the first oil cylinder extends into the movable mold and is provided with a first sliding block cooperating with the second position-limiting straight-pull assembly; The second position-limiting straight-pull assembly includes: a second oil cylinder fixedly arranged on the movable mold, a telescopic rod of the second oil cylinder fixedly connected to a second slider, the second slider is arranged perpendicular to the first slider, and a groove matching the first slider is provided at the bottom of the second slider.

2. The inverted oblique draw die according to claim 1, characterized in that: The undercut forming straight-pull assembly comprises: a third oil cylinder fixedly arranged on the movable mold, a telescopic rod of the third oil cylinder fixedly connected with a third slider, the third slider is arranged perpendicular to the second slider, and the second slider is provided with a protrusion matched with the third slider.

3. The inverted oblique draw die according to claim 2, characterized in that: The demoulding straight-pull assembly comprises: a fourth oil cylinder fixedly arranged on the movable mold, a telescopic rod of the fourth oil cylinder fixedly connected with a fourth slider, and a groove for undercut molding is provided between the fourth slider and the third slider.

4. The inverted oblique draw die according to claim 3, characterized in that: A movable mold core is fixedly connected inside the movable mold. The movable mold core is provided with a glue feeding channel connected with the glue feeding port, and the glue feeding channel is connected with the molding cavity.

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