Horseshoe-shaped core pulling structure of three-way pipe

Abstract

The utility model relates to a horseshoe-shaped core-pulling structure of a three-way pipe, which comprises a mould main body, a mould cavity is arranged in the mould main body, and the mould cavity comprises a straight-pulling channel and two arc-pulling channels which are communicated with each other; a direct extraction mechanism is arranged in the direct extraction channel, and arc extraction mechanisms are symmetrically arranged in the two arc extraction channels respectively; the direct-pulling mechanism comprises a direct-pulling assembly and a direct-pulling mold core, and the direct-pulling assembly is used for driving the direct-pulling mold core to move in the direct-pulling channel; the arc drawing mechanism comprises an arc drawing assembly, an arc drawing sliding block, a straight cylinder core, a horseshoe-shaped core and a horseshoe-shaped connecting rod, the arc drawing assembly is in driving connection with the arc drawing sliding block, the arc drawing sliding block is connected with the straight cylinder core, the horseshoe-shaped core is rotatably connected with the horseshoe-shaped connecting rod, and the horseshoe-shaped core is attached to the end, away from the arc drawing sliding block, of the straight cylinder core; the horseshoe connecting rod penetrates through the straight cylinder core and is provided with a sliding block connecting rod, an arc drawing sliding groove is formed in the arc drawing sliding block, and the sliding block connecting rod is located in the arc drawing sliding groove. The structure is simple, core pulling is convenient, and the horseshoe-shaped core rotates flexibly.

Description

Technical Field

[0001] The utility model relates to the technical field of injection core-pulling molds, in particular to a horseshoe-shaped core-pulling structure of a three-way pipe. Background Art

[0002] When using injection molds to produce three-way pipe fittings, after the product is injection molded, it is necessary to pull the core of the product before it can be ejected. Since the three-way pipe has a curvature, the curvature brings difficulties to the core pulling when the three-way pipe is produced by injection molding. The core cannot be directly pulled out like a straight joint. It is necessary to develop a core pulling mold that is suitable for this curvature to remove the core. However, the movable joint of the existing core pulling mold is not flexible, which easily causes wear of the mold cavity; in addition, the existing core pulling mold has a complex structure, high production cost, and cumbersome operation and control. Utility Model Content

[0003] Based on this, the purpose of the utility model is to overcome the deficiencies of the prior art and provide a horseshoe-shaped core-pulling structure for a three-way pipe, which has a simple structure, convenient core-pulling and flexible rotation of the horseshoe-shaped core.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A horseshoe core-pulling structure for a three-way pipe comprises a mold body, wherein a mold cavity for injection molding the three-way pipe is arranged in the mold body, wherein the mold cavity comprises a straight pull-out channel and two arc pull-out channels which are interconnected, wherein the two arc pull-out channels are symmetrically arranged relative to the straight pull-out channel; a straight pull-out mechanism is arranged in the straight pull-out channel, wherein the two arc pull-out channels are symmetrically arranged with respect to the straight pull-out mechanism; the straight pull-out mechanism comprises a straight pull-out assembly and a straight pull-out core, wherein the straight pull-out assembly is used to drive the straight pull-out core to move in the straight pull-out channel; the arc pull-out mechanism The structure includes an arc pull-out component, an arc pull-out slider, a straight-cylindrical core, a horseshoe core, and a horseshoe connecting rod. The arc pull-out component is drivingly connected to the arc pull-out slider, the arc pull-out slider is connected to the straight-cylindrical core, the horseshoe core and the horseshoe connecting rod are rotatably connected, and the horseshoe core is fitted with an end of the straight-cylindrical core away from the arc pull-out slider, the end of the horseshoe connecting rod away from the horseshoe core passes through the straight-cylindrical core and is provided with a slider connecting rod, the arc pull-out slider is provided with an arc pull-out slide groove, and the slider connecting rod is located in the arc pull-out slide groove.

[0006] As an implementation manner, the length direction of the arc-drawing slide groove is parallel to the length direction of the horseshoe connecting rod, and the slider connecting rod is perpendicular to the horseshoe connecting rod.

[0007] As an embodiment, the bottom of the horseshoe core fits with the end of the straight core away from the arc-drawing slider, and the distance of the horseshoe core along the length direction of the horseshoe connecting rod is less than the length of the arc-drawing slide groove.

[0008] As an embodiment, a through groove for the horseshoe connecting rod to pass through is provided in the straight-cylindrical core.

[0009] As an implementation manner, an arc-drawing limiting groove is provided on the mold body, the arc-drawing limiting groove is communicated with the arc-drawing channel, and the arc-drawing sliding block is slidably disposed in the arc-drawing limiting groove.

[0010] As an embodiment, the arc pull-out assembly includes an arc pull-out base, an arc pull-out motor, and an arc pull-out connecting rod. The arc pull-out base is arranged on the mold body, the arc pull-out motor is arranged on the arc pull-out base, one end of the arc pull-out connecting rod is arranged at the output end of the arc pull-out motor, and the other end of the arc pull-out connecting rod passes through the arc pull-out limit groove and is connected to the arc pull-out slider.

[0011] As an implementation manner, the horseshoe core and the horseshoe connecting rod are pivotally connected via a rotating shaft.

[0012] As an embodiment, the direct-pull assembly includes a direct-pull base, a direct-pull motor, and a direct-pull connecting rod. The direct-pull base is arranged on the mold body, the direct-pull motor is arranged on the direct-pull base, one end of the direct-pull connecting rod is arranged at the output end of the direct-pull motor, and the other end is connected to the direct-pull core.

[0013] As an implementation mode, an ejection mechanism is provided in the mold body, and the output end of the ejection mechanism can extend into the mold cavity and is used to eject the three-way pipe after injection molding.

[0014] Compared with the traditional technology, the horseshoe-shaped core-pulling structure of the three-way pipe described in the utility model has the following beneficial effects:

[0015] The horseshoe-shaped core-pulling structure of the three-way pipe of the utility model can form the core of the three-way pipe in the mold cavity through the straight-pulling mechanism and the two arc-pulling mechanisms. In this way, when the injection molding is completed, the straight-pulling mechanism and the two arc-pulling mechanisms can be respectively pulled out of the three-way pipe. Specifically, the utility model can directly pull the straight-pulling core out of the straight-pulling channel through the straight-pulling component, and first drive the arc-pulling slider and the straight-tube core to be pulled out toward the outlet of the arc-pulling channel through the arc-pulling component. During this process, the horseshoe core does not move. When the arc-pulling groove on the arc-pulling slider abuts against the slider connecting rod, the arc-pulling slider can drive the horseshoe connecting rod to be pulled out, and then drive the horseshoe core to be pulled out through the horseshoe connecting rod. Since the horseshoe core and the horseshoe connecting rod are rotatably connected, the horseshoe core can rotate and be pulled out of the three-way pipe. Therefore, the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model has a simple structure, convenient core pulling, and flexible rotation of the horseshoe core.

[0016] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model;

[0018] Figure 2 This is one of the internal structure schematic diagrams of the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model;

[0019] Figure 3 This is the second schematic diagram of the internal structure of the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model;

[0020] Figure 4 This is the third schematic diagram of the internal structure of the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the arc extraction mechanism of the utility model;

[0022] Figure 6 It is an exploded schematic diagram of the arc extraction mechanism of the utility model.

[0023] Explanation of the reference numerals: 10. mold body; 11. mold cavity; 20. straight-pull mechanism; 21. straight-pull base; 22. straight-pull motor; 23. straight-pull connecting rod; 24. straight-pull core; 30. arc-pull mechanism; 31. arc-pull base; 32. arc-pull motor; 33. arc-pull connecting rod; 34. arc-pull slider; 35. straight core; 36. horseshoe core; 37. horseshoe connecting rod; 38. arc-pull slide; 39. slider connecting rod; 40. rotating shaft. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention.

[0025] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] See also Figures 1 to 6; The utility model embodiment provides a horseshoe-shaped core-pulling structure of a three-way pipe, including a mold body 10, wherein the mold body 10 is provided with a mold cavity 11 for injection molding the three-way pipe, wherein the mold cavity 11 includes a straight pull-out channel and two arc pull-out channels which are interconnected, and the two arc pull-out channels are symmetrically arranged relative to the straight pull-out channel; a straight pull-out mechanism 20 is arranged in the straight pull-out channel, and arc pull-out mechanisms 30 are symmetrically arranged in the two arc pull-out channels; the straight pull-out mechanism 20 includes a straight pull-out component and a straight pull-out core 24, wherein the straight pull-out component is used to drive the straight pull-out core 24 to move in the straight pull-out channel; the arc pull-out mechanism 30 includes an arc pull-out mechanism 20; A drawing component, an arc drawing slider 34, a straight core 35, a horseshoe core 36, and a horseshoe connecting rod 37. The arc drawing component is drivingly connected to the arc drawing slider 34, the arc drawing slider 34 is connected to the straight core 35, the horseshoe core 36 is rotatably connected to the horseshoe connecting rod 37, and the horseshoe core 36 is in contact with one end of the straight core 35 away from the arc drawing slider 34, the end of the horseshoe connecting rod 37 away from the horseshoe core 36 passes through the straight core 35 and is provided with a slider connecting rod 39, the arc drawing slider 34 is provided with an arc drawing slot 38, and the slider connecting rod 39 is located in the arc drawing slot 38.

[0027] Furthermore, the length direction of the arc-drawing chute 38 of the embodiment of the utility model is parallel to the length direction of the horseshoe connecting rod 37, and the slider connecting rod 39 is perpendicular to the horseshoe connecting rod 37. In the embodiment of the utility model, the bottom of the horseshoe core 36 is in contact with the end of the straight core 35 away from the arc-drawing slider 34, and the distance of the horseshoe core 36 along the length direction of the horseshoe connecting rod 37 is less than the length of the arc-drawing chute 38. In this way, when the moving distance of the arc-drawing slider 34 reaches the length direction of the arc-drawing chute 38, the straight core 35 and the horseshoe core 36 are no longer in contact, and when the arc-drawing slider 34 drives the straight core 35 and the horseshoe core 36 to move at the same time, the straight core 35 will not hinder the rotation of the horseshoe core 36.

[0028] Optionally, in the embodiment of the utility model, a through groove for the horseshoe connecting rod 37 to pass through is provided in the straight-cylinder core 35. An arc-drawing limit groove is provided on the mold body 10, and the arc-drawing limit groove is communicated with the arc-drawing channel, and the arc-drawing slider 34 is slidably disposed in the arc-drawing limit groove. Further, the arc-drawing assembly includes an arc-drawing base 31, an arc-drawing motor 32, and an arc-drawing connecting rod 33, the arc-drawing base 31 is disposed on the mold body 10, the arc-drawing motor 32 is disposed on the arc-drawing base 31, one end of the arc-drawing connecting rod 33 is disposed at the output end of the arc-drawing motor 32, and the other end of the arc-drawing connecting rod 33 passes through the arc-drawing limit groove and is connected to the arc-drawing slider 34. In the embodiment of the utility model, the horseshoe core 36 and the horseshoe connecting rod 37 are pivotally connected through a rotating shaft 40.

[0029] Optionally, in an embodiment of the utility model, the direct-pull assembly includes a direct-pull base 21, a direct-pull motor 22, and a direct-pull connecting rod 23. The direct-pull base 21 is arranged on the mold body 10, and the direct-pull motor 22 is arranged on the direct-pull base 21. One end of the direct-pull connecting rod 23 is arranged at the output end of the direct-pull motor 22, and the other end is connected to the direct-pull core 24.

[0030] Optionally, in an embodiment of the utility model, an ejection mechanism is provided in the mold body 10 , and an output end of the ejection mechanism can extend into the mold cavity 11 and is used to eject the three-way pipe after injection molding.

[0031] Compared with the prior art, the horseshoe core-pulling structure of the three-way pipe of the utility model can form the core of the three-way pipe in the mold cavity 11 through the straight-pulling mechanism 20 and the two arc-pulling mechanisms 30. In this way, when the injection molding is completed, the straight-pulling mechanism 20 and the two arc-pulling mechanisms 30 can be respectively pulled out of the three-way pipe. Specifically, the utility model can directly pull the straight-pulling core 24 out of the straight-pulling channel through the straight-pulling component, and first drive the arc-pulling slider 34 and the straight-tube core 35 to be pulled out toward the outlet of the arc-pulling channel through the arc-pulling component. During this process, the horseshoe core 36 does not move. When the arc-pulling groove 38 on the arc-pulling slider 34 abuts against the slider connecting rod 39, the arc-pulling slider 34 can drive the horseshoe connecting rod 37 to be pulled out, and then drive the horseshoe core 36 to be pulled out through the horseshoe connecting rod 37. Since the horseshoe core 36 and the horseshoe connecting rod 37 are rotatably connected, the horseshoe core 36 can rotate and be pulled out from the three-way pipe. Therefore, the horseshoe-shaped core-pulling structure of the three-way pipe of the utility model has a simple structure, convenient core-pulling and flexible rotation of the horseshoe-shaped core 36.

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the horseshoe-shaped core-pulling structure of the utility model three-way pipe. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A horseshoe-shaped core-pulling structure of a three-way pipe, characterized in that: The mold body comprises a mold cavity for injection molding a three-way pipe, wherein the mold cavity comprises a straight extraction channel and two arc extraction channels which are interconnected, and the two arc extraction channels are symmetrically arranged relative to the straight extraction channel; a straight extraction mechanism is arranged in the straight extraction channel, and arc extraction mechanisms are symmetrically arranged in the two arc extraction channels; The direct-drawing mechanism comprises a direct-drawing assembly and a direct-drawing core, wherein the direct-drawing assembly is used to drive the direct-drawing core to move in the direct-drawing channel; The arc-pulling mechanism includes an arc-pulling assembly, an arc-pulling slider, a straight-cylindrical core, a horseshoe core, and a horseshoe connecting rod. The arc-pulling assembly is drivingly connected to the arc-pulling slider, the arc-pulling slider is connected to the straight-cylindrical core, the horseshoe core and the horseshoe connecting rod are rotatably connected, and the horseshoe core is fitted with one end of the straight-cylindrical core away from the arc-pulling slider, one end of the horseshoe connecting rod away from the horseshoe core passes through the straight-cylindrical core and is provided with a slider connecting rod, an arc-pulling slide groove is provided on the arc-pulling slider, and the slider connecting rod is located in the arc-pulling slide groove.

2. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 1 is characterized in that: The length direction of the arc-drawing slide groove is parallel to the length direction of the horseshoe connecting rod, and the slider connecting rod is perpendicular to the horseshoe connecting rod.

3. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 2 is characterized in that: The bottom of the horseshoe core fits with one end of the straight core away from the arc-drawing slide block, and the distance of the horseshoe core along the length direction of the horseshoe connecting rod is less than the length of the arc-drawing slide groove.

4. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 2 is characterized in that: A through slot for the horseshoe connecting rod to pass through is arranged in the straight-cylindrical core.

5. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 2 is characterized in that: The mold body is provided with an arc-drawing limiting groove, the arc-drawing limiting groove is communicated with the arc-drawing channel, and the arc-drawing sliding block is slidably arranged in the arc-drawing limiting groove.

6. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 5, characterized in that: The arc-pulling assembly includes an arc-pulling base, an arc-pulling motor, and an arc-pulling connecting rod. The arc-pulling base is arranged on the mold body, the arc-pulling motor is arranged on the arc-pulling base, one end of the arc-pulling connecting rod is arranged at the output end of the arc-pulling motor, and the other end of the arc-pulling connecting rod passes through the arc-pulling limiting groove and is connected to the arc-pulling slider.

7. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 2 is characterized in that: The horseshoe core and the horseshoe connecting rod are pivotally connected via a rotating shaft.

8. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 1 is characterized in that: The direct-pull assembly includes a direct-pull base, a direct-pull motor, and a direct-pull connecting rod. The direct-pull base is arranged on the mold body, the direct-pull motor is arranged on the direct-pull base, one end of the direct-pull connecting rod is arranged at the output end of the direct-pull motor, and the other end is connected to the direct-pull core.

9. The horseshoe-shaped core-pulling structure of the three-way pipe according to claim 1, characterized in that: An ejection mechanism is arranged in the mold body, and the output end of the ejection mechanism can extend into the mold cavity and is used to eject the three-way pipe after injection molding.

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