Bending mechanism for parts with plating layers

Abstract

The utility model discloses a bending mechanism for a part with a plating layer, which comprises a lower die bending block, the lower die bending block is used for supporting the position of the part, a punch support frame is arranged above the lower die bending block, a roller is connected to the punch support frame in a rolling manner, and the roller is used for pressing and bending the part in a rolling manner. The punch supporting frame is provided with a limiting groove enabling the idler wheel to rotate more stably, the two sides of the punch supporting frame are provided with protective plates used for limiting the positions of the two sides of the idler wheel, the protective plates are provided with rotating shafts, and the idler wheel is arranged on the rotating shafts. By means of the mode, the part bending device can avoid scratching and scraping off tinning on a part when the part is bent.

Description

Technical Field

[0001] The utility model relates to the field of stamping and bending, in particular to a bending mechanism for parts with coatings. Background Art

[0002] There are many metal pins in automotive electronic parts that need to be protected by plating and increase conductivity. The most commonly used electroplating scheme is nickel base followed by tin plating. Tin is relatively soft and is prone to scratches and scrapes during the metal parts forming process. Stamping is a top-down process. During the bending process of metal pins, when the bending punch contacts the part for bending, friction occurs in the bending area and scratches and scrapes off the electroplated tin. For example, the Chinese patent with announcement number CN203526331U discloses a one-time bending and forming mechanism for metal parts. When bending metal parts, the forming punch drives the forming bend to slide and rub the surface of the part and bend the part. However, this method can easily scratch and scrape off the electroplated tin on the surface of the part. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a bending mechanism for parts with coatings, which can avoid scratching and scraping off the tin coating on the parts when bending the parts.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a bending mechanism for parts with coatings, including: a lower die bending block, the lower die bending block is used to support the position of the parts, a punch support frame is arranged above the lower die bending block, a roller is rotatably connected to the punch support frame, the roller is used to roll and press to bend the parts, a limiting groove is opened on the punch support frame to make the roller more stable when rotating, guard plates for limiting the position of both sides of the roller are arranged on both sides of the punch support frame, a rotating shaft is arranged on the guard plate, and the roller is arranged on the rotating shaft.

[0005] Preferably, the lower die bending block includes a bearing portion and a giving way portion, the bearing portion is used to support the position of one end of the part, and the giving way portion provides movement space when the roller presses the part.

[0006] Preferably, one side of the punch support frame is provided with a fitting arc surface that fits with the bending position of the bent part, so that the part can be bent into place.

[0007] Preferably, an auxiliary positioning component for assisting in positioning the part on the bearing part is provided on the bearing part, and two groups of auxiliary positioning components are symmetrically arranged. The auxiliary positioning component includes a slide groove, a positioning block and a spring. The slide groove is opened on the bearing part, and the positioning block slides in cooperation with the slide groove. The spring is arranged between the side wall of the slide groove and one end of the positioning block to move the positioning block toward one side of the part.

[0008] Preferably, a spring groove is provided at the bottom of the slide groove, and a spring is arranged in the spring groove, with one end of the spring abutting against one side of the spring groove and the other end abutting against one end of the positioning block.

[0009] The beneficial effects of the utility model are:

[0010] 1. The punch support frame is used to bend the parts by rolling, so that the friction on the surface of the parts is changed from sliding friction to rolling friction, avoiding scratching and hanging of the tin on the parts;

[0011] 2. By arranging positioning blocks on both sides of the part, the positioning blocks on both sides push the position of the part, thereby ensuring the accuracy of the position of the part on the lower die bending block. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an exploded schematic diagram of the utility model;

[0014] Figure 3 It is the state intention of the part of the utility model when it is bent;

[0015] Figure 4 It is a schematic diagram of the state of the part of the utility model after bending;

[0016] Figure 5 It is a top view of the positional relationship between the slideway and the parts of the utility model;

[0017] Figure 6 It is a rear view of the lower die bending block showing the positional relationship between the positioning block and the parts of the utility model.

[0018] The markings of the components in the accompanying drawings are as follows:

[0019] 1. Lower die bending block; 11. Load-bearing part; 12. Yielding part; 2. Punch support frame; 21. Fitting arc surface; 3. Roller; 4. Limiting groove; 5. Guard plate; 6. Rotating shaft; 7. Slide groove; 71. Spring groove; 8. Positioning block; 9. Spring; 200. Parts. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "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 referred device or element 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.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0027] Example:

[0028] refer to Figure 1-Figure 4 A bending mechanism for parts with coatings comprises: a lower die bending block 1, the lower die bending block 1 is used to support the position of the part 200, a punch support frame 2 is arranged above the lower die bending block 1, a roller 3 is rotatably connected to the punch support frame 2, the roller 3 is used to roll and press the part 200, so that one end of the part 200 is bent by the rolling pressure, and a limiting groove 4 is opened on the punch support frame 2 to make the roller 3 more stable when rotating, so that a very small gap is left between the rolling surface of the roller 3 and the surface of the limiting groove 4, or the roller 3 and the surface of the limiting groove 4 are fitted and matched without affecting the rotation of the roller 3, so that when foreign matter is stuck on the roller 3, the limiting groove 4 can scrape the foreign matter on the roller 3. The two sides of the punch support frame 2 are bolted with guard plates 5 for limiting the position of the two sides of the roller 3. A rotating shaft 6 is arranged on the guard plate 5, and the roller 3 is arranged on the rotating shaft 6, so that the position of the rotating shaft 6 is supported by the guard plate 5, thereby supporting the position of the roller 3 relative to the punch support frame 2.

[0029] refer to Figure 1-Figure 4 The lower die bending block 1 includes a bearing portion 11 and a yielding portion 12. The bearing portion 11 is used to support the position of one end of the part 200, and the yielding portion 12 provides a movable space for the roller 3 to press the part 200. Therefore, when the part 200 needs to be bent, one end of the part 200 is on the bearing portion 11 and is fixed, and the other end is suspended above the yielding portion 12. Then the punch bracket drives the roller to press toward the part 200 from top to bottom, so that the part 200 is bent.

[0030] refer to Figure 1-Figure 4In order to enable the part 200 to be bent 90° as required, a fitting arc surface 21 is provided on one side of the punch support frame 2, which fits with the bending position of the part 200 after bending, so that the part 200 is bent into place. When the punch support frame 2 moves downward into place, that is, when the part 200 is bent 90°, the punch support frame 2 contacts the upper end surface of the part 200, and the fitting arc surface 21 fits the upper end surface of the part 200. When the part 200 is bent 90 degrees, sufficient downward movement space is provided for the punch support frame 2 to move downward, thereby avoiding interference between the punch support frame 2 and the part 200.

[0031] refer to Figure 1 , Figure 5 and Figure 6 In order to make the part 200 be located just below the fitting arc surface 21 of the punch support frame 2 before being bent, an auxiliary positioning component for assisting the positioning of the part 200 on the bearing portion 11 is provided on the bearing portion 11. The two groups of auxiliary positioning components are symmetrically arranged, so that the two groups of auxiliary positioning components jointly correct the part 200 to a suitable position. The auxiliary positioning component includes a slide groove 7, a positioning block 8 and a spring 9. The slide groove 7 is arranged on the bearing portion 11, and the positioning block 8 slides with the slide groove 7. The spring 9 is arranged between the side wall of the slide groove 7 and one end of the positioning block 8, so that the extrusion block moves toward one side of the part 200, thereby applying pressure to the positioning block 8 through the spring 9, and then the positioning block 8 moves toward the part 200. The slide groove 7 limits the maximum position of the positioning block 8 moving toward the part 200, which is the position of one end of the positioning block 8 when it just contacts the part 200, so that the position of the part 200 on the bearing portion 11 is corrected by the two relative groups of positioning blocks 8.

[0032] refer to Figure 5 and Figure 6 In order to make the position of the spring 9 more stable during operation, a spring groove 71 is provided at the bottom of the slide 7. The width and depth of the spring groove 71 are equal to the diameter of the spring 9. The spring 9 is arranged in the spring groove 71. One end of the spring 9 abuts against one side of the spring groove 71, and the other end abuts against one end of the positioning block 11, thereby pushing the positioning block 8 more stably. In order to prevent the spring 9 from escaping from the spring groove 71, a cover plate can be laid above part of the spring 9 groove 71. The length of the cover plate is less than the travel range of the positioning block 8, so as not to affect the movement of the positioning block 8.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A bending mechanism for parts with coatings, characterized in that: include: A lower die bending block (1), the lower die bending block (1) is used to support the position of a part (200), a punch support frame (2) is arranged above the lower die bending block (1), a roller (3) is rotatably connected to the punch support frame (2), the roller (3) is used to roll and press to bend the part (200), the punch support frame (2) is provided with a limiting groove (4) to make the roller (3) more stable when rotating, guard plates (5) are arranged on both sides of the punch support frame (2) for limiting the position of both sides of the roller (3), a rotating shaft (6) is arranged on the guard plate (5), and the roller (3) is arranged on the rotating shaft (6).

2. A bending mechanism for coated parts according to claim 1, characterized in that: The lower die bending block (1) comprises a bearing portion (11) and a clearance portion (12), wherein the bearing portion (11) is used to support the position of one end of the part (200), and the clearance portion (12) provides a movable space for the roller (3) to press the part (200).

3. A bending mechanism for coated parts according to claim 2, characterized in that: One side of the punch support frame (2) is provided with a fitting arc surface (21) that fits with the bending position of the bent part (200) so that the part (200) is bent into place.

4. A bending mechanism for coated parts according to claim 2, characterized in that: The bearing portion (11) is provided with an auxiliary positioning component for assisting in positioning the part (200) on the bearing portion (11), and two groups of the auxiliary positioning components are symmetrically arranged. The auxiliary positioning component comprises a slide groove (7), a positioning block (8) and a spring (9). The slide groove (7) is provided on the bearing portion (11), and the positioning block (8) is slidably matched with the slide groove (7). The spring (9) is arranged between the side wall of the slide groove (7) and one end of the positioning block (8) so that the positioning block (8) moves toward one side of the part (200).

5. A bending mechanism for plated parts according to claim 4, characterized in that: A spring groove (71) is provided at the bottom of the slide groove (7), and the spring (9) is arranged in the spring groove (71). One end of the spring (9) abuts against one side of the spring groove (71), and the other end abuts against one end of the positioning block (8).

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