Clamp for clamping large three-way elbow pipe fitting

Abstract

The utility model relates to the technical field of elbow pipe fitting auxiliary jigs, in particular to a clamp for clamping a large three-way elbow pipe fitting, which comprises a mounting frame. The bottom of the mounting frame is provided with a first clamping assembly used for slidably clamping a first end part of the large three-way elbow pipe fitting, a second clamping assembly used for slidably clamping a second end part of the large three-way elbow pipe fitting, and a third clamping assembly used for slidably clamping a third end part of the large three-way elbow pipe fitting; a connector used for being connected with a mechanical arm is arranged on the top of the mounting frame. The large three-way elbow pipe fitting transfer device can transfer a large three-way elbow pipe fitting from a mold to a conveying belt under the assistance of a mechanical arm, and solves the problems that workers are high in labor intensity and prone to being scalded.

Description

Technical Field

[0001] The utility model relates to the technical field of elbow pipe fittings auxiliary jigs, and more specifically, to a jig for clamping large three-way elbow pipe fittings. Background Art

[0002] Elbow pipe fittings are pipe fittings for changing the direction of pipelines. Commonly used ones are classified by angle into three types: 45 degrees, 90 degrees, and 180 degrees, and by the number of interfaces into three types: two-way, three-way, and four-way. They are commonly used for the connection of water pipes in life. The common outer diameter sizes are generally 20 - 60 mm. Because of their small size, multiple parts are molded in one mold during injection molding. When the mold is opened, they roll onto the conveyor belt for collection and transportation under the action of gravity and the inclined transfer groove. However, for large elbow pipe fittings with an outer diameter of 600 - 1000 mm (such as elbow pipe fittings for municipal sewage pipes), due to their large size and weight, it is impossible to use the scheme of combining gravity and transfer groove to move them onto the conveyor belt when the mold is opened.

[0003] For such large elbow pipe fittings, the existing solution is to manually transfer them to the conveyor belt. However, when the injection molding is completed, the surface temperature is above 60 °C, which is likely to cause scalding accidents and increase the labor intensity of workers.

[0004] The inventor searched and found that there is currently no jig for clamping large three-way elbow pipe fittings and transferring them from the mold to the conveyor belt. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a jig for clamping large three-way elbow pipe fittings, which can transfer large three-way elbow pipe fittings from the mold to the conveyor belt with the assistance of a manipulator, and solves the problems of high labor intensity of workers and easy scalding.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A jig for clamping large three-way elbow pipe fittings includes a mounting frame. At the bottom of the mounting frame, there is a first clamping component for sliding and clamping the first end of the large three-way elbow pipe fitting, a second clamping component for sliding and clamping the second end of the large three-way elbow pipe fitting, and a third clamping component for sliding and clamping the third end of the large three-way elbow pipe fitting; at the top of the mounting frame, there is a connection head for connecting with a manipulator.

[0008] Optionally, the first clamping assembly includes a clamping bottom plate and a clamping connecting plate. Slide rails are arranged on both sides of the clamping bottom plate. Sliders are slidably arranged on the slide rails, and the sliders are fixedly connected to the clamping connecting plate. A clamping cylinder for pushing the clamping connecting plate to slide linearly is arranged on the clamping bottom plate, and the movable end of the clamping cylinder is fixedly connected to the clamping connecting plate. Clamping side plates are arranged on the clamping connecting plate. On one side of the end of the clamping side plate close to the large three-way elbow pipe fitting, a number of pins are arranged for movably inserting into the inner hole of the large three-way elbow pipe fitting and pressing against the inner wall of the large three-way elbow pipe fitting to complete the clamping process. The clamping bottom plate is fixedly connected to the mounting frame.

[0009] Optionally, at least two kidney-shaped through holes are formed in the clamping side plate, and pins are fixed on the kidney-shaped through holes by screws.

[0010] Optionally, the end of the pin for movably inserting into the inner hole of the large three-way elbow pipe fitting is set to be conical.

[0011] Optionally, the mounting frame includes four connecting square pipes provided with a number of mounting holes. Any one of the connecting square pipes is fixedly connected to two of the other three connecting square pipes. At least one pressing block for pressing against the outer wall of the large three-way elbow pipe fitting to improve the clamping stability is arranged on the connecting square pipe.

[0012] Optionally, a jacking cylinder for movably pressing against the outer wall of the large three-way elbow pipe fitting to push it away from the mounting frame is arranged on the mounting frame.

[0013] In summary, the utility model has the following beneficial effects: (1) By arranging the first clamping assembly, the second clamping assembly and the third clamping assembly at specific positions on the mounting frame, the first clamping assembly, the second clamping assembly and the third clamping assembly jointly clamp the large three-way elbow pipe fitting, and are connected to the manipulator through the connecting head. Under the multi-directional movement of the manipulator, the large three-way elbow pipe fitting is transferred from the mold to the conveyor belt. The transfer process does not require the participation of workers, solving the problems of high labor intensity and easy scalding of workers, and having the advantage of high safety factor. (2) By installing pins in at least two kidney-shaped through holes, the number of stress points of the large three-way elbow pipe fitting is increased, thereby improving its stability during the clamping and transfer process and reducing the risk of collision with the injection molding machine table. (3) By installing pressing blocks on the connecting square pipes provided with a number of mounting holes, the positions of the pressing blocks can be adjusted according to the specific shape of the large three-way elbow pipe fitting, and the large three-way elbow pipe fitting can be pressed and fixed to the greatest extent with a smaller number of pressing blocks, thereby improving the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a bottom view of the utility model;

[0016] Figure 3 It is a schematic structural diagram of the first clamping assembly in the present utility model;

[0017] Figure 4 It is a state diagram of the present utility model clamping a large three-way elbow pipe fitting on a mold;

[0018] Figure 5 It is a state diagram of the present utility model clamping a large three-way elbow pipe fitting and placing it on a conveyor belt;

[0019] Figure 6 It is a state diagram of the present utility model when clamping a large three-way elbow pipe fitting.

[0020] In the figure: 1. mounting frame; 11. connecting head; 12. connecting square pipe; 2. first clamping assembly; 21. clamping bottom plate; 22. clamping connecting plate; 23. slide rail; 24. slider; 25. clamping cylinder; 26. clamping side plate; 261. kidney-shaped through hole; 27. retaining pin; 3. second clamping assembly; 4. third clamping assembly; 5. pressing block; 6. ejecting cylinder; 7. large three-way elbow pipe fitting; 8. mold; 9. conveyor belt. Detailed implementation manners

[0021] To make the objectives, features and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific implementation manners of the present utility model with reference to the accompanying drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0022] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include one or more of such features.

[0023] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature. Terms such as "vertical", "horizontal", "left", "right", "up", "down" and similar expressions are only for the purpose of illustration, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0025] The present utility model provides a fixture for clamping large three-way elbow pipe fittings, as Figure 1-6 shown, which includes a mounting frame 1. At the bottom of the mounting frame 1, there are provided a first clamping assembly 2 for slidably clamping the first end of the large three-way elbow pipe fitting 7, a second clamping assembly 3 for slidably clamping the second end of the large three-way elbow pipe fitting 7, and a third clamping assembly 4 for slidably clamping the third end of the large three-way elbow pipe fitting 7; at the top of the mounting frame 1, there is provided a connection head 11 for connecting with a manipulator.

[0026] In this embodiment, one end of the bottom side surface of the mounting frame 1 is fixedly installed with the first clamping assembly 2 by existing means such as screws or welding, the other end of the bottom side surface of the mounting frame 1 is fixedly installed with the second clamping assembly 3 by existing means such as screws or welding, and the middle end of the bottom side surface of the mounting frame 1 is fixedly installed with the third clamping assembly 4 by existing means such as screws or welding. On the top side surface of the mounting frame 1, the connection head 11 is fixedly installed by existing means such as screws or welding. A plurality of screw holes are provided on the connection head 11, and the whole fixture is fixed on the manipulator with the cooperation of screws. The sliding directions of the first clamping assembly 2, the second clamping assembly 3, and the third clamping assembly 4 are set according to the end positions of the large three-way elbow pipe fitting 7. As Figure 2 shown, the movable end of the first clamping assembly 2 slides on the straight line shown by arrow B, the movable end of the second clamping assembly 3 slides on the straight line shown by arrow A, the movable end of the third clamping assembly 4 slides on the straight line shown by arrow C. Arrow B and arrow A are collinear, and arrow C is perpendicular to arrow A or arrow B.

[0027] When the movable end of the first clamping assembly 2 slides in the opposite direction of arrow B, it gradually approaches the lower end of the large three-way elbow pipe fitting 7, and after sliding a certain stroke, it clamps the lower end of the large three-way elbow pipe fitting 7; when the movable end of the second clamping assembly 3 slides in the opposite direction of arrow A, it gradually approaches the upper end of the large three-way elbow pipe fitting 7, and after sliding a certain stroke, it clamps the upper end of the large three-way elbow pipe fitting 7; when the movable end of the third clamping assembly 4 slides in the opposite direction of arrow C, it gradually approaches the middle end (the third end) of the large three-way elbow pipe fitting 7, and after sliding a certain stroke, it clamps the middle end of the large three-way elbow pipe fitting 7; when the movable ends of the first clamping assembly 2, the second clamping assembly 3, and the third clamping assembly 4 all clamp the large three-way elbow pipe fitting 7, the manipulator moves the entire fixture according to the preset trajectory program, and then transfers the large three-way elbow pipe fitting 7 from the mold 8 to the conveyor belt 9.

[0028] In the present utility model, the first clamping assembly 2, the second clamping assembly 3, and the third clamping assembly 4 are arranged at specific positions on the mounting frame 1, so that the first clamping assembly 2, the second clamping assembly 3, and the third clamping assembly 4 jointly clamp the large three-way elbow pipe fitting 7, and are connected to the manipulator through the connecting head 11. Under the multi-directional movement of the manipulator, the large three-way elbow pipe fitting 7 is transferred from the mold 8 to the conveyor belt 9. The transfer process does not require the participation of workers, solves the problems of high labor intensity and easy scalding of workers, and has the advantage of high safety factor.

[0029] Furthermore, the first clamping assembly 2 includes a clamping bottom plate 21 and a clamping connecting plate 22. Slide rails 23 are arranged on both sides of the clamping bottom plate 21, and sliders 24 are slidably arranged on the slide rails 23. The sliders 24 are fixedly connected to the clamping connecting plate 22; a clamping cylinder 25 for pushing the clamping connecting plate 22 to perform linear sliding is arranged on the clamping bottom plate 21, and the movable end of the clamping cylinder 25 is fixedly connected to the clamping connecting plate 22; a clamping side plate 26 is arranged on the clamping connecting plate 22, and a plurality of pins 27 for movably inserting into the inner holes of the large three-way elbow pipe fitting 7 and pressing against the inner wall of the large three-way elbow pipe fitting 7 to complete the clamping process are arranged on one side of the end of the clamping side plate 26 close to the large three-way elbow pipe fitting 7; the clamping bottom plate 21 is fixedly connected to the mounting frame 1.

[0030] In addition, in order to improve the universality of the components, the second clamping assembly 3 and the third clamping assembly 4 are set to have exactly the same structure as the first clamping assembly 2, that is, the structures of the second clamping assembly 3 and the third clamping assembly 4 are exactly the same as the structure of the first clamping assembly 2, except for the positions and directions of installation on the mounting frame 1.

[0031] Furthermore, at least two kidney-shaped through holes 261 are formed on the clamping side plate 26, and the pins 27 are fixed on the kidney-shaped through holes 261 by screws.

[0032] As Figure 1 and Figure 3 shown, the clamping bottom plate 21 is fixedly installed at one end of the bottom side of the mounting frame 1 by existing fixing means such as screws or welding. A linear slide rail 23 is fixedly installed on both sides of the bottom side of the mounting frame 1 by screws. A slider 24 adapted thereto is slidably arranged on the slide rail 23, and the slider 24 is fixedly connected to the clamping connecting plate 22 by screws. The fixed end of the clamping cylinder 25 is fixed to the clamping bottom plate 21 by screws, and its movable end is fixed to the clamping connecting plate 22 by a clamping structure, a threaded structure or an existing detachable fixing structure. The clamping side plate 26 is fixedly installed on the bottom surface of the clamping connecting plate 22 away from the slide rail 23. A plurality of kidney-shaped through holes 261 are provided on the clamping side plate 26 according to actual needs. In order to obtain a relatively stable fixing effect, the number of the kidney-shaped through holes 261 is not less than two. In this embodiment, there are two. A retaining pin 27 is installed on each kidney-shaped through hole 261 by screws. Preferably, the two retaining pins 27 are spaced apart by a certain distance, and the specific installation positions refer to Figure 3 , and setting like this can fix the inner wall of the large three-way elbow pipe fitting 7 at multiple force application points, thereby improving the clamping stability of the large three-way elbow pipe fitting 7.

[0033] In addition, the retaining pin 27 can be fixedly installed at different positions of the kidney-shaped through holes 261, or can be installed at different positions on the same kidney-shaped through hole 261 to adapt to large three-way elbow pipe fittings 7 of different sizes, thereby improving the versatility of the fixture.

[0034] Furthermore, as Figure 3 shown, the end of the retaining pin 27 for being movably inserted into the inner hole of the large three-way elbow pipe fitting 7 is provided in a conical shape, so as to facilitate the smooth insertion of the retaining pin 27 into the inner hole of the elbow pipe fitting 6, reducing the precision requirement of the position where the fixture is located, that is, reducing the debugging difficulty of the manipulator debugger.

[0035] Furthermore, the mounting frame 1 includes four connecting square pipes 12 provided with a number of mounting holes. Any one of the connecting square pipes 12 is fixedly connected to two of the other three connecting square pipes 12; at least one pressing block 5 for pressing against the outer wall of the large three-way elbow pipe fitting 7 to improve the clamping stability is provided on the connecting square pipe 12.

[0036] As Figure 1 and Figure 2As shown, the mounting bracket 1 is formed by connecting and fixing four connecting square tubes 12 with angle codes or screws. The four connecting square tubes 12 are divided into two groups that are perpendicular to each other, and the two connecting square tubes 12 in each group are arranged in parallel. The cross-section of the connecting square tube 12 is a regular octagon, and a plurality of mounting holes (not marked in the attached drawings) are equally spaced along its length direction on its eight side surfaces. The mounting holes are used to cooperate with screws to fix the pressing block 5, and the number and mounting positions of the pressing blocks 5 can be set according to actual needs. In order to obtain a relatively stable fixing effect and a low-cost effect, one pressing block 5 is installed on each connecting square tube 12. The surface of the pressing block 5 that presses against the outer wall of the large tee elbow fitting 7 is an inclined surface or an arc-shaped surface to be compatible with more specifications of the large tee elbow fitting 7.

[0037] Furthermore, a jacking cylinder 6 is provided on the mounting bracket 1 for actively pressing against the outer wall of the large tee elbow fitting 7 and then pushing it away from the mounting bracket 1.

[0038] As Figure 1 and Figure 2 shown, the jacking cylinder 6 is installed on the mounting bracket 1 with screws, approximately located at the geometric center position of the mounting bracket 1. It actively presses against the outer wall of the large tee elbow fitting 7 according to actual needs. For example, when the fixture is in the Figure 4 shown position, the large tee elbow fitting 7 may have a certain degree of shaking in the X-axis direction or the Y-axis direction (because there are gaps between the pressing block 5, the pin 27 and the large tee elbow fitting 7). At this time, the jacking cylinder 6 pushes the large tee elbow fitting 7 to press against the pin 27, so as to ensure that the large tee elbow fitting 7 does not shake significantly when the manipulator flips the fixture; when the manipulator moves the fixture to the Figure 5 shown position, the jacking cylinder 6 no longer presses against the large tee elbow fitting 7, and the first clamping assembly 2 and the second clamping assembly 3 slide in opposite directions, facilitating the large tee elbow fitting 7 to fall onto the conveyor belt 9.

[0039] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A fixture for clamping large three-way elbow pipe fittings, characterized in that It includes a mounting frame. At the bottom of the mounting frame, there are a first clamping assembly for slidably clamping the first end of a large three-way elbow pipe fitting, a second clamping assembly for slidably clamping the second end of the large three-way elbow pipe fitting, and a third clamping assembly for slidably clamping the third end of the large three-way elbow pipe fitting. At the top of the mounting frame, there is a connection head for connecting with a manipulator.

2. The fixture for clamping large three-way elbow pipe fittings according to claim 1, wherein The first clamping assembly includes a clamping bottom plate and a clamping connecting plate. On both sides of the clamping bottom plate, there are slide rails. Sliding blocks are slidably arranged on the slide rails, and the sliding blocks are fixedly connected with the clamping connecting plate. On the clamping bottom plate, there is a clamping cylinder for pushing the clamping connecting plate to perform linear sliding, and the movable end of the clamping cylinder is fixedly connected with the clamping connecting plate. On the clamping connecting plate, there are clamping side plates. On one side of the clamping side plates close to the first end of the large three-way elbow pipe fitting, there are several pins for movably inserting into the inner holes of the large three-way elbow pipe fitting and pressing against the inner wall of the large three-way elbow pipe fitting to complete the clamping process. The clamping bottom plate is fixedly connected with the mounting frame.

3. The fixture for clamping large three-way elbow pipe fittings according to claim 2, characterized in that At least two kidney-shaped through holes are formed on the clamping side plates, and pins are fixed on the kidney-shaped through holes by screws.

4. The fixture for clamping large three-way elbow pipe fittings according to claim 3, characterized in that The end of the pin for movably inserting into the inner hole of the large three-way elbow pipe fitting is tapered.

5. The fixture for clamping large three-way elbow pipe fittings according to claim 4, characterized in that, The mounting frame includes four connecting square pipes with several mounting holes formed therein. Any one of the connecting square pipes is fixedly connected with two of the other three connecting square pipes. On the connecting square pipes, there is at least one abutting block for abutting against the outer wall of the large three-way elbow pipe fitting to improve the clamping stability.

6. The fixture for clamping large three-way elbow pipe fittings according to claim 1, characterized in that On the mounting frame, there is an ejecting cylinder for movably abutting against the outer wall of the large three-way elbow pipe fitting and pushing it away from the mounting frame.

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