Die for positioning and processing plastic pipe fitting

Abstract

The utility model discloses a mould for positioning and processing a plastic pipe fitting, which comprises a lower mould, a lifting sliding chute is arranged in the middle of the lower mould, a lifting sliding block and an elastic part for driving the lifting sliding block to reset are arranged in the lifting sliding chute in a sliding manner, an adjusting ruler is detachably arranged in the lifting sliding block, and the adjusting ruler is connected with the lifting sliding chute. A limiting piece is arranged at the end of the adjusting ruler and used for limiting the extending length of the pipe fitting, and the pipe fitting chamfering device has the advantages that the limiting piece can ensure that the extending length of the pipe fitting is consistent in each time of machining, and therefore the precision and consistency of chamfering machining are guaranteed; the arc-shaped chucks can be replaced according to the diameters of the pipe fittings to adapt to the pipe fittings with different sizes, so that wide applicability and flexibility are provided; the ejector pin is matched with the lifting sliding block, the automatic reset function is achieved through the elastic component, the operation convenience is improved, the manual adjustment time is shortened, the ejector pin pushes the limiting piece away from the machining position, and interference to pipe fitting machining operation in the chamfering process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipe fitting processing, in particular to a mould for positioning processing of plastic pipe fittings. Background Art

[0002] When processing plastic pipe fittings, they need to be chamfered. Chamfering can eliminate stress concentration and improve the mechanical properties of plastic pipe fittings, such as strength and stiffness. If the plastic pipe fittings need to cooperate with other parts, chamfering can reduce friction and improve the convenience of assembly. Corresponding equipment is required when processing and chamfering plastic pipe fittings, such as a chamfering machine. In the existing operation, the pipe fitting is placed in the clamping and positioning tool of the chamfering machine. After clamping and fixing, the chamfering blade moves toward the pipe fitting and then rotates for processing. In the above operation, the existing positioning tool does not have the corresponding limit parts, and cannot ensure that the extended length of the pipe fitting is consistent during each processing, and cannot effectively guarantee the accuracy and consistency of the chamfering processing. Utility Model Content

[0003] The utility model aims to provide a mold for positioning and processing plastic pipe fittings to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a mold for positioning and processing plastic pipe fittings, comprising:

[0005] The lower die has a lifting slot in the middle, a lifting slider and an elastic part driving the lifting slider to reset are slidably arranged inside the lifting slot, an adjusting ruler is detachably installed inside the lifting slider, and a limiting piece is arranged at the end of the adjusting ruler for limiting the extension length of the pipe fitting;

[0006] An upper die is placed above the lower die, and a top pin is provided at the bottom of the upper die for pushing the limit plate away from the processing position when the lower die and the upper die are closed;

[0007] Arc chuck, the arc chuck is symmetrically installed at the ends of the lower die and the upper die;

[0008] A hydraulic cylinder, wherein the fixed end of the hydraulic cylinder is placed outside the lower die, and the telescopic end of the hydraulic cylinder is fixedly connected to the upper die through a pulling rod.

[0009] Preferably, the elastic part comprises a guide rod fixedly connected to the inside of the lifting slide groove, the guide rod is slidably connected to the lifting slider, and a return spring is sleeved on the outer side of the guide rod and below the lifting slider.

[0010] Preferably, a through hole is provided at the top of the lifting slide groove, and the ejector pin is slidably connected to the through hole.

[0011] Preferably, a fixing screw is fixedly connected to the outer side of the arc-shaped chuck, and the lower die and the upper die are both provided with mounting holes that cooperate with the fixing screw.

[0012] Preferably, two positioning rods are fixedly connected symmetrically with respect to the fixing screw on the outer side of the arc-shaped chuck, and the lower die and the upper die are provided with positioning holes used in conjunction with the positioning rods.

[0013] Preferably, the middle parts of the lower die and the upper die are provided with operating holes for installing the arc-shaped chuck.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the limit plate can ensure that the extended length of the pipe is consistent each time the pipe is processed, thereby ensuring the accuracy and consistency of the chamfering process; the arc-shaped chuck can be replaced according to the diameter of the pipe to adapt to pipes of different sizes, providing wide applicability and flexibility; the ejector cooperates with the lifting slider to realize the automatic reset function through the elastic component, thereby improving the convenience of operation and reducing the time for manual adjustment; the ejector pushes the limit plate away from the processing position to avoid interfering with the pipe processing operation during the chamfering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the arc-shaped chuck of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the limiting piece of the utility model;

[0018] Figure 4 It is a cross-sectional structural schematic diagram of the lower mold of the utility model.

[0019] In the figure: 1. lower die; 2. upper die; 3. arc chuck; 4. hydraulic cylinder; 5. fixing screw; 6. positioning rod; 7. lifting slide; 8. lifting slider; 9. adjusting ruler; 10. limit plate; 11. ejector pin; 12. guide rod; 13. reset spring; 14. pulling rod; 15. operating hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , 2As shown in Figures 3 and 4, the utility model provides a technical solution: a mold for positioning and processing plastic pipe fittings, comprising: a lower mold 1 and an upper mold 2 of a convex structure, the lower mold 1 and the upper mold 2 are symmetrically arranged up and down, a lifting slide 7 is opened in the middle of the lower mold 1, a lifting slider 8 and an elastic part driving the lifting slider 8 to reset are slidably arranged inside the lifting slide 7, an adjusting ruler 9 is fixedly installed inside the lifting slider 8 by bolt extrusion, and a limit plate 10 is installed at the end of the adjusting ruler 9 by bolts for limiting the extension length of the pipe fitting; the upper mold 2 is placed above the lower mold 1, and a ejector pin 11 is fixedly connected to the bottom of the upper mold 2 for pushing the limit plate 10 away from the processing position when the lower mold 1 and the upper mold 2 are molded; the arc chuck 3 is symmetrically installed at the top end of the lower mold 1 and the bottom end of the upper mold 2, and when the two arc chucks 3 are closed, a complete ring is formed for clamping and fixing the pipe fitting; the fixed end of the hydraulic cylinder 4 is fixedly connected to the outer side of the lower mold 1, and the telescopic end of the hydraulic cylinder 4 is fixedly connected to the upper mold 2 through a pulling rod 14.

[0022] It should be noted that the utility model will replace the arc-shaped chuck 3 adapted to the pipe fitting according to its diameter, and then install the lower die 1 at one end of the chamfering device, so that the chamfering knife corresponds to the arc-shaped chuck 3 at the top of the lower die 1, and place the pipe fitting in the arc-shaped chuck 3 at the top of the lower die 1, so that the end of the pipe fitting contacts the limit plate 10, thereby limiting the length of the pipe fitting to be extended, and allowing the hydraulic cylinder 4 to be retracted through the control switch. The hydraulic cylinder 4 pulls the upper die 2 downward through the pull rod 14, and the upper die 2 drives the ejector pin 11 to move into the lifting chute 7 in the middle of the lower die 1, and the ejector pin 11 presses the lifting slide 8 downward along the lifting slide 7. When the two arc-shaped chucks 3 clamp the pipe fitting, the ejector pin 11 pushes the limit plate 10 to a position away from the end of the pipe fitting through the lifting slide 8. At this time, the chamfering device drives the chamfering knife to move toward the end of the pipe fitting, thereby performing the chamfering work.

[0023] See also Figure 1 , 4 As shown, the elastic part includes a guide rod 12 fixedly connected to the inside of the lifting slide groove 7, the guide rod 12 is slidably connected to the lifting slider 8, and a return spring 13 is sleeved on the outer side of the guide rod 12 and located below the lifting slider 8.

[0024] It should be noted that, in the present invention, after the chamfering process is completed, the hydraulic cylinder 4 drives the lower die 1 to separate from the upper die 2 through the pulling rod 14. At this time, the ejector pin 11 moves to the top of the lifting chute 7. Under the action of the reset spring 13, the lifting slide block 8 is quickly reset inside the lifting chute 7, so that the lifting slide block 8 reaches the top position of the lifting chute 7. At this time, the limit plate 10 also follows the lifting slide block 8 to achieve reset, which is convenient for limiting the pipe during re-processing.

[0025] See also Figure 4 As shown, a through hole is provided at the top of the lifting slide groove 7, and the ejector pin 11 is slidably connected to the through hole.

[0026] It should be noted that, in the natural state of the present invention, the ejector pin 11 is inserted into the through hole and does not enter the lifting slide groove 7. When the mold 1 and the upper mold 2 are closed, the ejector pin 11 pushes the lifting slide block 8 downward, and the through hole can guide the ejector pin 11, so that the upper mold 2 can move vertically downward stably, thereby improving the stability of the downward movement of the lower mold 1.

[0027] See also Figure 2 , 4 As shown, the outer side of the arc chuck 3 is fixedly connected with a fixing screw 5, the lower mold 1 and the upper mold 2 are both provided with mounting holes that cooperate with the fixing screw 5, the outer side of the arc chuck 3 is symmetrically fixed with two positioning rods 6 about the fixing screw 5, the lower mold 1 and the upper mold 2 are provided with positioning holes that cooperate with the positioning rods 6, and the middle part of the lower mold 1 and the upper mold 2 are provided with an operating hole 15 for installing the arc chuck 3.

[0028] It should be noted that the utility model can replace arc chucks 3 of different specifications according to different pipe diameters. When replacing, the nut screwed on the outside of the fixing screw 5 is removed through the operating hole 15, and then the arc chuck 3 is removed. When replacing a suitable arc chuck 3, the positioning rod 6 on the outside of the arc chuck 3 is inserted into the corresponding positioning hole to position the arc chuck 3 to prevent deflection during installation. After the installation is completed, the corresponding nut is screwed onto the outside of the fixing screw 5 from the operating hole 15 to complete the installation of the arc chuck 3 with the lower mold 1 and the upper mold 2.

[0029] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" 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.

[0030] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0031] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold for positioning and processing plastic pipe fittings, characterized in that: include: A lower die (1) is provided with a lifting slot (7) in the middle of the lower die (1), a lifting slider (8) and an elastic part for driving the lifting slider (8) to return to its original position are slidably arranged inside the lifting slot (7), an adjusting ruler (9) is detachably installed inside the lifting slider (8), and a limiting plate (10) is arranged at the end of the adjusting ruler (9) for limiting the extension length of the pipe fitting; An upper mold (2), the upper mold (2) is placed above the lower mold (1), and a push pin (11) is provided at the bottom of the upper mold (2) for pushing the limit plate (10) away from the processing position when the lower mold (1) and the upper mold (2) are closed; An arc-shaped chuck (3), the arc-shaped chuck (3) is symmetrically mounted on the ends of the lower die (1) and the upper die (2); A hydraulic cylinder (4), wherein the fixed end of the hydraulic cylinder (4) is placed outside the lower die (1), and the telescopic end of the hydraulic cylinder (4) is fixedly connected to the upper die (2) via a pulling rod (14).

2. A mold for positioning and processing plastic pipe fittings according to claim 1, characterized in that: The elastic part comprises a guide rod (12) fixedly connected to the inside of the lifting slide groove (7), the guide rod (12) being slidably connected to the lifting slider (8), and a return spring (13) is sleeved on the outside of the guide rod (12) and located below the lifting slider (8).

3. A mold for positioning and processing plastic pipe fittings according to claim 2, characterized in that: A through hole is provided at the top of the lifting slide groove (7), and the ejector pin (11) is slidably connected to the through hole.

4. A mold for positioning and processing plastic pipe fittings according to claim 1, characterized in that: The outer side of the arc-shaped chuck (3) is fixedly connected with a fixing screw (5), and the lower die (1) and the upper die (2) are both provided with mounting holes that match the fixing screw (5).

5. A mold for positioning and processing plastic pipe fittings according to claim 4, characterized in that: Two positioning rods (6) are fixedly connected symmetrically to the outer side of the arc-shaped chuck (3) and about the fixing screw (5), and the lower die (1) and the upper die (2) are provided with positioning holes used in conjunction with the positioning rods (6).

6. A mold for positioning and processing plastic pipe fittings according to claim 5, characterized in that: The middle parts of the lower die (1) and the upper die (2) are both provided with operating holes (15) for installing the arc-shaped chuck (3).

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