Assembling tool for flat-head nut on injection molding part

Abstract

The assembling tool is characterized in that a positioning block is arranged at the lower end of a supporting plate, a base is arranged below the positioning block, a limiting assembly is arranged between the positioning block and the base, the limiting assembly is installed on the supporting plate, a plurality of guide holes are formed in the positioning block, a sliding rod is connected into each guide hole in a sliding mode, and the sliding rod is connected with the supporting plate in a sliding mode. One end of each sliding rod is fixedly connected to the pressing plate, the other end of each sliding rod is provided with a magnet, the magnets are used for magnetically attracting nuts, the base is provided with a plurality of mounting grooves, the mounting grooves are used for arranging plastic parts, and the limiting assembly is used for positioning the relative positions of the nuts. According to the assembling tool for the flat-head nut on the injection molding part, a worker visually installs the to-be-assembled plastic part to the preset position of the installation groove, then the nut is attracted through the magnet, and the relative position of the nut is adjusted through the limiting assembly, so that the platform nut is aligned and sinks into the installation position of the plastic part, and then the flat-head nut is assembled. The assembling efficiency is improved, the assembling quality is guaranteed, and the assembling quality is controllable.

Description

Technical Field

[0001] The utility model belongs to the field of production and assembly of injection molded parts, and particularly relates to an assembly tool for flat head nuts on injection molded parts. Background Technique

[0002] Injection molding is a method for producing industrial product shapes. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding, compression molding and die casting methods. In the prior art, injection molded parts are usually formed by an injection molding machine. The production principle is to use thermoplastic or thermosetting materials to make various shapes of plastic products by using plastic molding molds. When it is necessary to produce plastic parts with embedded flat head nuts, the flat head nuts can be placed into the injection mold, and then formed into an integral structure by injection molding. This method requires workers to stack the flat head nuts into the mold and then form them, with low production efficiency and high mold cost. It is also possible to make the injection molded parts into a split structure, and then combine the flat head nuts with the injection molded parts into an integral body. This method has high production efficiency and low mold cost, but the process of combining the flat head nuts with the injection molded parts is greatly affected by human factors, the production quality is uncontrollable, and once the assembly is poor, the flat head nuts are difficult to disassemble. Summary of the Invention

[0003] In view of this, the utility model aims to provide an assembly tool for flat head nuts on injection molded parts to solve the problems of low assembly efficiency and uncontrollable assembly quality when assembling flat head nuts on injection molded parts in the prior art.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] An assembly tool for flat head nuts on injection molded parts includes a support plate, a positioning block, a pressing plate, a base and a limiting component. The support plate is fixedly installed at a preset position. A positioning block is arranged at the lower end of the support plate. A base is arranged below the positioning block, and a limiting component is arranged between the positioning block and the base. The limiting component is installed on the support plate. The positioning block is provided with a plurality of guide holes, and a slide bar is slidably connected in each guide hole. One end of each slide bar is fixedly connected to the pressing plate, and a magnet is arranged at the other end of the slide bar. The magnet is used to magnetically attract nuts. The base is provided with a plurality of installation grooves for setting plastic parts, and the limiting component is used to position the relative positions of the nuts.

[0006] Further, a guide sleeve is installed in each of the guide holes, the outer periphery of the slide bar is slidably connected to the guide sleeve, the outer diameter of the nut is larger than the inner diameter of the guide sleeve, the outer diameter of the magnet is smaller than the inner diameter of the guide sleeve, the nut is magnetically attracted to one end of the guide sleeve, and the pressing plate is located at the other end of the guide sleeve.

[0007] Further, the guide sleeve is a linear bearing.

[0008] Further, the limiting component includes a first vertical plate, a second vertical plate and a first horizontal plate. The first vertical plate and the second vertical plate are arranged in parallel with each other. The first vertical plate and the second vertical plate are respectively fixedly connected to both sides of the positioning block. A first sliding groove is respectively provided on one side of the first vertical plate and one side of the second vertical plate. The periphery of the first horizontal plate is respectively slidably connected into the first sliding groove. A second sliding groove is respectively provided on the other side of the first vertical plate and the other side of the second vertical plate. The periphery of the second horizontal plate is respectively slidably connected into the second sliding groove. And the first horizontal plate and the second horizontal plate are arranged in parallel with each other. A positioning gap is provided between the first horizontal plate and the second horizontal plate. The periphery of the nut is located within the positioning gap.

[0009] Further, the nut includes a polygonal screwing portion, and a cylindrical flat portion is provided at one end of the polygonal screwing portion. The periphery of the polygonal screwing portion is located within the positioning gap. The magnet can adsorb the cylindrical flat portion, and the outer diameter of the cylindrical flat portion is larger than the inner diameter of the guide sleeve.

[0010] Further, a guide rail is fixedly installed on the first horizontal plate. A first through hole is provided on the second horizontal plate. The periphery of the guide rail is located within the first through hole. And a return spring is provided on the periphery of the guide rail. The two ends of the return spring are respectively fixedly connected to one side of the first horizontal plate and one side of the second cross bar.

[0011] Further, a plurality of negative pressure grooves are provided at one end of the positioning block. And the pressing plate is located at the other end of the positioning block. And the negative pressure grooves are coaxially arranged with the guide holes. The inner diameter of the negative pressure grooves is the same as the inner diameter of the cylindrical flat portion. Vent holes are provided on the side wall of the negative pressure grooves. The external air extraction device is communicated with the negative pressure grooves through the vent holes.

[0012] Compared with the prior art, the assembly tool for the flat head nut on the injection molded part of the present utility model has the following beneficial effects:

[0013] (1) For the assembly tool for the flat head nut on the injection molded part of the present utility model, the staff visually installs the plastic part to be assembled to the preset position of the installation groove, and then attracts the nut through the magnet, and makes the relative position of the nut correct through the limiting component, so that the flat head nut is aligned and sinks into the installation position of the plastic part, improving the assembly efficiency, ensuring the assembly quality, and the assembly quality is controllable.

[0014] (2) For the assembly tool for the flat head nut on the injection molded part of the present utility model, the guide sleeve adopts a linear bearing, which is convenient for the staff to drive a plurality of sliding rods to slide through the pressing plate, and the guide sleeve can stop the sliding of the nut, separating the magnet from the nut, so as to facilitate the assembly of the nut into the installation position of the plastic part. Description of the Drawings

[0015] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0016] Figure 1 It is a schematic structural diagram of an assembly tool for a flat-head nut on an injection molded part according to an embodiment of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the cooperation between a positioning block and a limiting component according to an embodiment of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the cooperation between a first cross plate and a second cross plate according to an embodiment of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of assembling a nut into a negative pressure groove according to an embodiment of the present utility model;

[0020] Figure 5 It is a schematic structural diagram of a nut according to an embodiment of the present utility model.

[0021] Explanation of reference numerals:

[0022] 1 - support plate; 2 - positioning block; 21 - guide sleeve; 22 - negative pressure groove; 23 - ventilation hole; 3 - pressing plate; 31 - sliding rod; 4 - base; 41 - installation groove; 5 - limiting component; 51 - first vertical plate; 52 - second vertical plate; 53 - first cross plate; 54 - second cross plate; 55 - first sliding groove; 56 - second sliding groove; 57 - alignment gap; 58 - guide rail; 59 - return spring; 6 - nut; 61 - polygonal screwing part; 62 - cylindrical flat part. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, 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. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 through specific situations.

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0027] As Figures 1 - 5 shown, the assembly tooling for flat head nuts on an injection molded part includes a support plate 1, a positioning block 2, a pressing plate 3, a base 4, and a limiting assembly 5. The support plate 1 is fixedly installed at a preset position. A positioning block 2 is arranged at the lower end of the support plate 1. A base 4 is arranged below the positioning block 2, and a limiting assembly 5 is arranged between the positioning block 2 and the base 4. The limiting assembly 5 is installed on the support plate 1. The positioning block 2 is provided with a plurality of guide holes, and a slide rod 31 is slidably connected in each guide hole. One end of each slide rod 31 is fixedly connected to the pressing plate 3, and a magnet is arranged at the other end of the slide rod 31. The magnet is used to magnetically attract a nut 6. The base 4 is provided with a plurality of installation slots 41 for arranging plastic parts. The limiting assembly 5 is used to position the relative position of the nut 6. The staff visually installs the plastic part to be assembled at the preset position of the installation slot 41, and then magnetically attracts the nut 6 through the magnet, and makes the relative position of the nut 6 correct through the limiting assembly 5, so that the flat head nut 6 is aligned and sinks into the installation position of the plastic part, improving the assembly efficiency, ensuring the assembly quality, and making the assembly quality controllable.

[0028] A guide sleeve 21 is installed in each guide hole. The outer periphery of the slide bar 31 is slidably connected to the inside of the guide sleeve 21. The outer diameter of the nut 6 is larger than the inner diameter of the guide sleeve 21, and the outer diameter of the magnet is smaller than the inner diameter of the guide sleeve 21. The nut 6 is magnetically attracted to one end of the guide sleeve 21, and the pressing plate 3 is located at the other end of the guide sleeve 21. The guide sleeve 21 is a linear bearing, which facilitates the staff to drive multiple slide bars 31 to slide through the pressing plate 3, and the guide sleeve 21 can stop the sliding of the nut 6, so that the magnet is separated from the nut 6, facilitating the assembly of the nut 6 into the installation position of the plastic part.

[0029] The limiting component 5 includes a first vertical plate 51, a second vertical plate 52 and a first horizontal plate 53. The first vertical plate 51 and the second vertical plate 52 are arranged in parallel with each other. The first vertical plate 51 and the second vertical plate 52 are respectively fixedly connected to both sides of the positioning block 2. First sliding grooves 55 are respectively provided on one side of the first vertical plate 51 and one side of the second vertical plate 52. The outer periphery of the first horizontal plate 53 is respectively slidably connected to the inside of the first sliding grooves 55. Second sliding grooves 56 are respectively provided on the other side of the first vertical plate 51 and the other side of the second vertical plate 52. The outer periphery of the second horizontal plate 54 is respectively slidably connected to the inside of the second sliding grooves 56. And the first horizontal plate 53 and the second horizontal plate 54 are arranged in parallel with each other. A positioning gap 57 is provided between the first horizontal plate 53 and the second horizontal plate 54. The outer periphery of the nut 6 is located in the positioning gap 57. As Figure 5 shown, the flat head nut 6 of this embodiment includes a polygonal screwing part 61, and a cylindrical flat part 62 is arranged at one end of the polygonal screwing part 61. The outer periphery of the polygonal screwing part 61 is located in the positioning gap 57. The magnet can adsorb the cylindrical flat part 62, and the outer diameter of the cylindrical flat part 62 is larger than the inner diameter of the guide sleeve 21. A guide rail 58 is fixedly installed on the first horizontal plate 53. A first through hole is provided on the second horizontal plate 54. The outer periphery of the guide rail 58 is located in the first through hole, and a return spring 59 is arranged on the outer periphery of the guide rail 58. The two ends of the return spring 59 are respectively fixedly connected to one side of the first horizontal plate 53 and one side of the second cross bar.

[0030] During implementation, the staff magnetically adsorb the nut 6 onto the magnet. At this time, the distribution states of the polygonal screwing portions 61 of the nut 6 are inconsistent, while the return spring 59 can always tighten the width of the alignment gap 57. When the first cross plate 53 abuts against the bottom of the first sliding groove 55 and the second cross plate 54 abuts against the bottom of the second sliding groove 56, the width of the alignment gap 57 is constant. At this time, the distribution states of the multiple polygonal screwing portions 61 are consistent. That is, the staff can judge the distribution state of the polygonal screwing portions 61 by observing whether the first cross plate 53 and the second cross plate 54 are reset to the bottom of the first sliding groove 55 and the second sliding groove 56. If the first cross plate 53 and the second cross plate 54 are not reset in place, the distribution state of the polygonal screwing portions 61 can be made consistent by frequently opening and closing the first cross plate 53 and the second cross plate 54. The principle of this part is that the magnet magnetically adsorbs the cylindrical flat part 62, but does not prevent the cylindrical flat part 62 from rotating. Moreover, the polygonal screwing portion 61 in this embodiment is a hexagonal structure. When the first cross plate 53 and the second cross plate 54 are frequently opened and closed, the hexagonal structure rotates under force to adapt to the width of the alignment gap 57.

[0031] One end of the positioning block 2 is provided with a plurality of negative pressure grooves 22, and the pressing plate 3 is located at the other end of the positioning block 2. The negative pressure grooves 22 are coaxially arranged with the guide holes. The inner diameter of the negative pressure grooves 22 is the same as the inner diameter of the cylindrical flat part 62. The side wall of the negative pressure groove 22 is provided with a ventilation hole 23. The external air extraction device is connected to the negative pressure groove 22 through the ventilation hole 23, and the external air injection device is connected to the negative pressure groove 22 through the ventilation hole 23, so as to form a negative pressure between the inside of the negative pressure groove 22, the plastic part installation position and the cylindrical flat part 62. After the cylindrical flat part 62 is separated from the magnet adsorption, at this time, the cylindrical flat part is located above the alignment gap 57, and the suction negative pressure can stabilize the relative position of the cylindrical flat part 62. When the staff open the first cross plate 53 and the second cross plate 54, the cylindrical flat part 62 is relatively stable and falls into the installation position of the plastic part, ensuring the assembly quality.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Assembly tooling for flat head nuts on injection molded parts, characterized by: The invention comprises a support plate (1), a positioning block (2), a pressing plate (3), a base (4) and a limiting assembly (5); the support plate (1) is fixedly installed at a preset position; a positioning block (2) is arranged at the lower end of the support plate (1); a base (4) is arranged below the positioning block (2); a limiting assembly (5) is arranged between the positioning block (2) and the base (4); the limiting assembly (5) is installed on the support plate (1); a plurality of guide holes are arranged on the positioning block (2); a sliding rod (31) is slidably connected in each guide hole; one end of each sliding rod (31) is fixedly connected to the pressing plate (3); a magnet is arranged at the other end of the sliding rod (31); the magnet is used for magnetically attracting a nut (6); a plurality of mounting grooves (41) are arranged on the base (4); the mounting grooves (41) are used for arranging plastic parts; and the limiting assembly (5) is used for positioning the relative position of the nut (6).

2. The assembly tool for the flat head nut on the injection molded part according to claim 1, characterized in that: A guide sleeve (21) is installed in each guide hole, the outer periphery of the slide rod (31) is slidably connected to the guide sleeve (21), the outer diameter of the nut (6) is larger than the inner diameter of the guide sleeve (21), the outer diameter of the magnet is smaller than the inner diameter of the guide sleeve (21), the nut (6) is magnetically attracted to one end of the guide sleeve (21), and the pressing plate (3) is located at the other end of the guide sleeve (21).

3. The assembly tool for the flat head nut on the injection molded part according to claim 2, characterized in that: The guide sleeve (21) is a linear bearing.

4. The assembly tool for the flat head nut on the injection molded part according to claim 2, characterized in that: The limiting assembly (5) comprises a first vertical plate (51), a second vertical plate (52) and a first horizontal plate (53). The first vertical plate (51) and the second vertical plate (52) are arranged parallel to each other. The first vertical plate (51) and the second vertical plate (52) are respectively fixedly connected to two sides of the positioning block (2). One side of the first vertical plate (51) and one side of the second vertical plate (52) are respectively provided with a first sliding groove (55). The periphery of the first horizontal plate (53) is respectively slidably connected to the first sliding groove (55). The other side of the first vertical plate (51) and the other side of the second vertical plate (52) are respectively provided with a second sliding groove (56). The periphery of the second horizontal plate (54) is respectively slidably connected to the second sliding groove (56). The first horizontal plate (53) and the second horizontal plate (54) are arranged parallel to each other. A positioning gap (57) is provided between the first horizontal plate (53) and the second horizontal plate (54). The periphery of the nut (6) is located in the positioning gap (57).

5. The assembly tool for the flat head nut on the injection molded part according to claim 4, characterized in that: The nut (6) comprises a polygonal screwing portion (61), and a cylindrical flat portion (62) is arranged at one end of the polygonal screwing portion (61). The periphery of the polygonal screwing portion (61) is located in the alignment gap (57). The magnet can adsorb the cylindrical flat portion (62), and the outer diameter of the cylindrical flat portion (62) is greater than the inner diameter of the guide sleeve (21).

6. The assembly tool for the flat head nut on the injection molded part according to claim 4, characterized in that: A guide rail (58) is fixedly mounted on the first transverse plate (53), a first through hole is provided on the second transverse plate (54), the periphery of the guide rail (58) is located in the first through hole, and a return spring (59) is provided on the periphery of the guide rail (58), and two ends of the return spring (59) are respectively fixedly connected to one side of the first transverse plate (53) and one side of the second transverse bar.

7. The assembly tool for the flat head nut on the injection molded part according to claim 5, characterized in that: A plurality of negative pressure grooves (22) are provided at one end of the positioning block (2), and the pressing plate (3) is located at the other end of the positioning block (2). The negative pressure grooves (22) are coaxially arranged with the guide hole, the inner diameter of the negative pressure grooves (22) is the same as the inner diameter of the cylindrical flat portion (62), and a vent hole (23) is provided on the side wall of the negative pressure groove (22), and an external exhaust device is connected to the negative pressure groove (22) through the vent hole (23).

Images