Multi-curved-surface universal shape taking device

Abstract

The utility model provides a multi-curved-surface universal shape-taking device, belongs to the technical field of shape-taking devices, and mainly solves the problem that curved-surface shape-taking in the prior art is time-consuming and labor-consuming. Which comprises shape taking rods, a hinge assembly and a shape taking end block, and is characterized in that a plurality of shape taking rods are also pin shafts of the hinge assembly; the multiple hinge assemblies are connected into a hinge row through the shape taking rods, the shape taking end blocks are arranged at the two ends of each shape taking rod, shape taking is conducted by moving the shape taking rods, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of shape-taking device technology, specifically relating to a multi-curved surface universal shape-taking device. Background Technology

[0002] Currently, at construction sites, especially when connecting two tubular objects at an angle, a hole needs to be drilled in the main pipe, with the hole's outline resembling a saddle. At the end of the branch pipe, an irregularly shaped opening needs to be cut to match the opening on the main pipe. Furthermore, when welding two curved surfaces, the problem of pre-shaping the opening and then marking lines on the workpiece arises. Chinese invention patent application CN117537692 A discloses a convenient saddle opening shaper, including a shaper assembly. The shaper assembly comprises: a flexible plate; a cavity evenly distributed along the longitudinal cross-section of the flexible plate; a lead strip disposed within the cavity; partitions evenly arranged in the middle of the outer side wall of the flexible plate; and strip-shaped grooves symmetrically disposed at the upper and lower ends of the partitions and connected to the flexible plate, the strip-shaped grooves being perpendicular to the lead strips. In this convenient saddle opening shaper, several strip-shaped grooves are evenly distributed on the flexible plate, and telescopic positioning rods are arranged opposite each other within the strip-shaped grooves. The telescopic positioning rods determine the inner diameter and shape of the saddle opening, facilitating the user to create interlocking saddle openings on the branch pipe and the main pipe respectively. This convenient saddle opening shaper, by incorporating a positioning assembly composed of square and triangular plates, allows the user to easily mark the shape of the saddle opening on the surface of the branch pipe and the main pipe.

[0003] Practice has shown that although the telescopic positioning rod can determine the inner diameter and shape of the saddle opening, it is difficult to guarantee accuracy because it is a multi-layered tube stack with a large diameter and insufficient density of the shaping points. The method of closing and fixing it by clamping components is cumbersome, time-consuming and inefficient. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of low shape-taking accuracy and cumbersome operation in the existing technology, and to provide a universal shape-taking device for multiple curved surfaces.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A multi-curved universal shape extractor includes shape extracting rods, hinge assemblies, and shape extracting end blocks. The shape extracting rods consist of several rods, which also serve as pins for the hinge assemblies. Several hinge assemblies are connected to form a hinge row via the shape extracting rods, and shape extracting end blocks are provided at both ends of each shape extracting rod.

[0007] The hinge assembly consists of at least four even-numbered connecting pin holes, which are divided into two groups. The ends of the connecting pin holes are staggered and fixed together. The connecting pin holes are rectangular in shape, with pin holes in the length direction. On the two sides in the width direction, the outer side is a semi-circular arc surface and the inner side is a flat surface. The hinge assembly is made of engineering plastic or alloy.

[0008] At the misaligned connection point of the connecting pin hole seat, a boss is provided in the direction of the pin hole so that a friction ring can be installed on the forming rod when it is subsequently inserted; the friction ring serves as a damping element.

[0009] A shaping end block is provided at both ends of the shaping rod. The shaping end block has a cuboid structure and a blind hole is provided on one end face in the length direction. The blind hole matches the diameter of the shaping rod. When the shaping rod is inserted into the blind hole, a tight fit is formed. A slope is provided at the other end of the shaping end block in the length direction. The sharp part formed by the bottom angle of the slope makes the shaping accurate.

[0010] A latch is provided at one end of the hinge row composed of hinge components to lock the hinge row in the closed position. The latch is required to lock the shape when taking the shape on the round tube.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] This invention employs a hinge array and a shaping rod. Shaping is performed by moving the shaping rod, which is convenient and quick. When shaping cylindrical objects, the hinge array can be tightly wrapped around the object and locked with a snap fastener. Shaping is time-saving and labor-saving when multiple curved surfaces are connected. The friction ring of this invention can be magnetic; when the workpiece is magnetic, the friction ring on the hinge array can attract the workpiece, making shaping more accurate. The hinge array of this device can be removed or removed by pulling out the shaping rod, resulting in hinge arrays of different lengths, which is flexible, convenient, and has high shaping efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the forming rod structure of this utility model;

[0015] Figure 3 a is a schematic diagram of the hinge assembly of this utility model, b is the left view of view a, and c is the right view of view a.

[0016] Figure 4 a is a schematic diagram of the shape-taking end block structure of this utility model, b is the left view of view a, and c is the top view of view a.

[0017] Figure 5This is a schematic diagram of the buckle structure of this utility model.

[0018] In the diagram: 1—Shaping rod; 2—Hinge assembly; 2-1—No. 1 connecting pin hole seat; 2-1a—No. 1 pin hole; 2-2—No. 2 connecting pin hole seat; 2-2a—No. 2 pin hole; 2-3—No. 3 connecting pin hole seat; 2-3a—No. 3 pin hole; 2-4—No. 4 connecting pin hole seat; 2-4a—No. 4 pin hole; 2-5—Boss; 3—Shaping end block; 3-1—Slope; 3-2—Blind hole; 4—Friction ring; 5—Snap fastener; 5-1—Shaft hole; 5-2—Hook. Detailed Implementation

[0019] like Figure 1 and Figure 2 As shown, a detailed description is given using a hinge assembly consisting of four connecting pin holes as an example:

[0020] A multi-curved universal shape extractor includes a shape extractor rod 1, a hinge assembly 2, and a shape extractor end block 3. The shape extractor rod 1 consists of several rods, which also serve as the pins of the hinge assembly 2. Several hinge assemblies 2 are connected to form a hinge row through the shape extractor rod 1, and a shape extractor end block 3 is provided at both ends of each shape extractor rod 1.

[0021] like Figure 3 As shown in Figure a, the hinge assembly 2 consists of at least four even-numbered connecting pin hole seats. These even-numbered connecting pin hole seats are divided into two groups: connecting pin hole seat 2-1 (number 1) and connecting pin hole seat 2-2 (number 2), connecting pin hole seat 2-3 (number 3) and connecting pin hole seat 2-4 (number 4). The ends of the connecting pin hole seats are arranged at intervals and fixed together as a whole. Figure 3 As shown in b and c, the connecting pin hole seat is a cuboid with pin holes along its length. The pin holes corresponding to the pin hole seat are pin holes No. 1, No. 2, No. 3, and No. 4, respectively. The diameter of the pin holes slides into the diameter of the forming rod. On the two sides of the pin hole seat in the width direction, the outer side is a semi-circular arc surface, and the inner side is a flat surface. The function of the semi-circular arc surface is to make the hinge row rotate smoothly and with small gaps.

[0022] At the misaligned connection of the pin hole seat end, a boss 2-5 is provided along the pin hole direction so that a friction ring 4 can be installed on the forming rod 1 when it is subsequently inserted; the friction ring 4 plays a damping role; the friction ring 4 is made of an elastic object or a magnet. When the forming rod is made of a magnetic object, the friction ring 4 is made of a magnet or an elastic object. When the forming rod is made of a non-magnetic object, the friction ring 4 is made of an elastic object, and an interference fit is formed between the inner hole of the friction ring and the forming rod.

[0023] A shaping end block 3 is provided at both ends of the shaping rod 1. The shaping end block 3 has a cuboid structure and a blind hole 3-2 is provided on one end face in the length direction. The blind hole 3-2 matches the diameter of the shaping rod 1. When the shaping rod 1 is inserted into the blind hole 3-2, a tight fit is formed. A slope 3-1 is provided at the other end in the length direction of the shaping end block 3. The sharp part formed by the bottom angle of the slope makes the shaping accurate.

[0024] The order in which the shaping rod 1 connects the several hinge assemblies 2 and friction rings 4 is as follows:

[0025] One end of the first forming rod 1 is inserted into the No. 3 pin hole 2-3a of the first hinge assembly 2, then into a friction ring 4, then into the No. 1 pin hole 2-1a of the second hinge assembly 2, then into the No. 4 pin hole 2-4a of the first hinge assembly 2, then into another friction ring 4, and finally into the No. 2 pin hole 2-2a of the second hinge assembly 2.

[0026] The second shaping rod 1 connects the third hinge component 2 in the above order, and so on, connecting the fourth, fifth...nth hinge component 2. As needed, different numbers of hinge components are connected to form a hinge row of a certain length.

[0027] like Figure 1 and Figure 5 As shown, a latch 5 is provided at one end of the hinge row composed of hinge assembly 2, which is used to lock the hinge row in the closed position. When taking shape on the round tube, the latch 5 needs to be locked. The latch 5 is provided with shaft hole 5-1 and hook 5-2. The shaft hole 5-1 and the taking rod 1 are in a sliding connection relationship. The taking rod 1 used to install the latch 5 only passes through the first pin hole 2-1a and the second pin hole 2-2a of the hinge assembly 2.

[0028] The operating steps of this utility model are as follows:

[0029] The first step is to determine the length of the hinge bar based on the specific workpiece.

[0030] The second step is to place the present invention on the surface on which the shape needs to be taken; this surface can be a curved surface or a flat surface.

[0031] The third step is to tightly attach the hinge assembly of this invention to the surface of the workpiece; for tubular workpieces, the hinge assembly is tightly wrapped around the surface of the round tube.

[0032] The fourth step is to push the forming rod 2 so that the tip of the forming end block 3 on it presses against the curved surface of another workpiece. When pushing the forming rod 2, the hinge row needs to be kept stationary.

[0033] The fifth step is to place the shaped part of the present invention on the workpiece and draw lines according to the outline formed by the shaped end block 3.

[0034] Step 6: Cut according to the outline drawn on the workpiece.

Claims

1. A multi-curved universal shape extractor, comprising a shape extractor rod (1), a hinge assembly (2), and a shape extractor end block (3), characterized in that: The forming rods (1) are several in number, and they are also the pins of the hinge assembly (2). The hinge assembly (2) is connected to form a hinge row through the forming rods (1), and forming end blocks (3) are provided at both ends of each forming rod (1).

2. The multi-surface universal shape extractor according to claim 1, characterized in that: The hinge assembly (2) consists of at least four even-numbered connecting pin holes, which are divided into two groups: connecting pin hole 1 (2-1) and connecting pin hole 2 (2-2), connecting pin hole 3 (2-3) and connecting pin hole 4 (2-4). The ends of the connecting pin holes are staggered and fixed together.

3. The multi-surface universal shape extractor according to claim 2, characterized in that: The connecting pin hole seat is a cuboid with pin holes in its length direction. The pin holes corresponding to the pin hole seat are No. 1 (2-1a), No. 2 (2-2a), No. 3 (2-3a), and No. 4 (2-4a). The diameter of the pin holes is in sliding fit with the diameter of the forming rod. On the two sides of the pin hole seat in the width direction, the outer side is a semi-circular arc surface and the inner side is a plane.

4. The multi-surface universal shape extractor according to claim 2, characterized in that: At the misaligned connection of the pin hole seat end, a boss (2-5) is provided along the pin hole direction so that a friction ring (4) can be installed on the forming rod (1) when it is inserted later; the friction ring (4) plays a damping role; the friction ring (4) is made of an elastic object or a magnet. When the forming rod is made of a magnetic object, the friction ring (4) is made of a magnet or an elastic object. When the forming rod is made of a non-magnetic object, the friction ring (4) is made of an elastic object.

5. The multi-surface universal shape extractor according to claim 1, characterized in that: in The shaping rod (1) has shaping end blocks (3) at both ends. The shaping end block (3) has a cuboid structure and a blind hole (3-2) is provided on one end face in the length direction. The blind hole (3-2) matches the diameter of the shaping rod (1). When the shaping rod (1) is inserted into the blind hole (3-2), a tight fit is formed. A slope (3-1) is provided at the other end in the length direction of the shaping end block (3). The sharp part formed by the bottom angle of the slope makes the shaping accurate.

6. The multi-surface universal shape extractor according to claim 1 or 4, characterized in that: The order in which the shaping rod (1) connects the several hinge assemblies (2) and friction rings (4) is as follows: One end of the first forming rod (1) is inserted into the No. 3 pin hole (2-3a) of the first hinge assembly (2), then into a friction ring (4), then into the No. 1 pin hole (2-1a) of the second hinge assembly (2), then into the No. 4 pin hole (2-4a) of the first hinge assembly (2), then into another friction ring (4), and finally into the No. 2 pin hole (2-2a) of the second hinge assembly (2). The second shaping rod (1) links the third hinge component (2) in the above order, and so on, linking the fourth, fifth... nth hinge component (2). As needed, different numbers of hinge components are linked to form a hinge row of a certain length.

7. The multi-surface universal shape extractor according to claim 1, characterized in that: in One end of the hinge row composed of hinge assembly (2) is provided with a buckle (5) to lock the hinge row in the closed position. When taking shape on the round tube, the buckle (5) needs to be locked. The buckle (5) is provided with a shaft hole (5-1) and a hook (5-2). The shaft hole (5-1) and the taking rod (1) are in a sliding connection relationship.

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