A through-hole hot melt nut plugging overflow jig and a hot melt nut implanting device

Abstract

The utility model discloses a kind of through-hole hot melt nut plugging glue overflow jigs and hot melt nut implantation equipment, for solving existing hot melt nut when implanting plastic shell, glue overflow is easy to accumulate to the bottom end surface of hot melt nut, to cause the technical problem that screw locking cannot be smoothly carried out. The jig of the utility model includes jig base, the support position for supporting plastic shell is arranged on the jig base, the implantation through-hole for implanting hot melt nut is opened on the plastic shell;The installation hole coaxially arranged with the implantation through-hole is opened at the support position, the elastic pressing piece that can be telescopic relative to the installation hole moves is arranged in the installation hole, the elastic pressing piece tends to expose in the installation hole to always press the bottom end surface of hot melt nut implanted in the implantation through-hole.

Description

Technical Field

[0001] This utility model relates to the field of hot melt nut implantation technology, and in particular to a through-hole hot melt nut sealing fixture and a hot melt nut implantation device. Background Technology

[0002] The casings of electronic devices such as mobile phones and laptops are made of plastic. When screwing in screws, the tension is insufficient, so it is generally necessary to heat-embed a thermoplastic nut in the plastic casing to ensure connection stability. However, during the insertion of the thermoplastic nut, glue overflow may occur. The glue overflow of the thermoplastic nut is due to the friction between the downward insertion of the nut and the plastic casing when the thermoplastic nut is inserted into the insertion hole of the plastic casing. This causes the nut and the plastic casing to heat up, resulting in the plastic casing melting and overflowing outward.

[0003] Currently, with the increasing popularity of thinner designs for electronic products, plastic casings are becoming thinner and thinner. To save space, most plastic casings have through holes for inserting nuts. With this design, when the thermoplastic nut is inserted into the insertion hole (the bottom end of the thermoplastic nut enters the insertion hole first), the insertion direction of the thermoplastic nut is opposite to the final screw fastening direction (the screw is tightened from the bottom end of the thermoplastic nut). This causes the excess glue caused during the thermoplastic process to block the bottom end of the thermoplastic nut (the screw mounting surface), thus affecting the subsequent screw fastening work.

[0004] In the prior art, to address the above situation, a fixture is designed to seal excess adhesive. Specifically, this fixture is equipped with a pressure head corresponding to the insertion hole of the plastic product. After the hot melt nut is inserted into place, the pressure head presses against the bottom surface of the hot melt nut to prevent excess adhesive from flowing into the threaded hole of the hot melt nut. However, during the insertion process of the hot melt nut, excess adhesive has already formed on the bottom surface of the hot melt nut before reaching the pressure head. Although the excess adhesive does not enter the threaded hole, the accumulation of excess adhesive on the bottom surface of the hot melt nut will affect the CCD (visual inspection device) during the screw fastening process. This causes the CCD to be unable to accurately capture the thread features inside the threaded hole of the hot melt nut, which in turn seriously affects the subsequent screw fastening process. As a result, the screw fastening equipment cannot accurately fasten the screw into the hot melt nut. In this case, in order to ensure that the screw fastening process can proceed normally, the excess adhesive can only be treated by CNC equipment, which seriously affects production efficiency.

[0005] Therefore, finding a technical solution that can solve the above-mentioned technical problems has become an important research topic for those skilled in the art. Utility Model Content

[0006] This utility model discloses a through-hole hot melt nut sealing fixture and a hot melt nut implantation device, which is used to solve the technical problem that when the existing hot melt nut is implanted into the plastic shell, the excess glue easily accumulates on the bottom surface of the hot melt nut, thus causing the screw to be unable to be properly fastened.

[0007] This utility model provides a through-hole hot melt nut sealing adhesive overflow fixture, including a fixture base, a support position for supporting a plastic shell on the fixture base, and an implantation through hole for implanting the hot melt nut on the plastic shell;

[0008] The support position has a mounting hole coaxially arranged with the implantation through hole. An elastic pressing member is provided in the mounting hole, which can extend and retract relative to the mounting hole. The elastic pressing member tends to protrude out of the mounting hole so as to always press against the bottom end face of the thermoplastic nut implanted in the implantation through hole.

[0009] Optionally, the elastic pressing member includes an elastic element and a pressing body;

[0010] The elastic element is located inside the mounting hole, with one end connected to the mounting hole and the other end connected to the bottom of the pressing body.

[0011] Optionally, the pressing body includes a pressing part for pressing against the bottom end face of the hot melt nut and a protruding part extending into the threaded hole of the hot melt nut;

[0012] The protruding portion is connected to the center of the pressing portion.

[0013] Optionally, the mounting hole wall is provided with a guide groove, and the pressing body further includes a connecting part that connects to the bottom surface of the pressing part. The connecting part is inserted into the mounting hole and the outer side wall of the connecting part is provided with a guide protrusion that cooperates with the guide groove.

[0014] Both the guide protrusion and the guide groove extend along the axial direction of the mounting hole, and the guide protrusion and the guide groove are slidably connected.

[0015] Optionally, the bottom surface of the connecting part is recessed into the interior of the connecting part to form a mounting groove, and one end of the elastic member is connected to the mounting groove.

[0016] Optionally, the elastic element is a spring.

[0017] Optionally, the support is a positioning groove that matches the shape of the plastic shell, the positioning groove is recessed into the interior of the fixture base, and the mounting hole is opened on the inner bottom wall of the positioning groove.

[0018] Optionally, the positioning groove is provided with a plurality of positioning pins for positioning and engaging with the positioning holes of the plastic housing.

[0019] Optionally, the positioning groove is further provided with a plurality of vacuum adsorption holes;

[0020] The vacuum adsorption hole is connected to a vacuum pipeline, and a vacuum generator is connected to the vacuum pipeline.

[0021] This utility model provides a hot melt nut implantation device, including a nut implantation mechanism, a machine base, and the above-mentioned through-hole hot melt nut sealing adhesive overflow fixture;

[0022] The through-hole hot melt nut sealing adhesive fixture is installed on the machine base.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the fixture of this utility model, when it is necessary to insert a hot melt nut into the plastic shell, the plastic shell is first placed on the support position of the fixture base, and then the hot melt nut is inserted into the insertion through hole through the nut insertion mechanism. Since the elastic pressing member is elastic and exposed in the mounting hole, during the hot melt nut insertion process, the elastic pressing member can always press against the bottom end face of the hot melt nut to prevent excess glue from accumulating on the bottom end face of the hot melt nut. During this process, under the protection of the elastic pressing member, all excess glue can only be squeezed to the outer periphery of the hot melt nut, effectively avoiding the situation where excess glue accumulates on the bottom end face of the hot melt nut, ensuring that the subsequent screw tightening process is not affected, and also avoiding the need to use CNC equipment to perform secondary processing on excess glue, thereby affecting production efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of a through-hole hot melt nut sealing adhesive overflow fixture provided by this utility model;

[0027] Figure 2 A cross-sectional structural diagram of a through-hole hot melt nut sealing adhesive overflow fixture provided by this utility model;

[0028] Figure 3 A schematic diagram of the structure of a through-hole hot melt nut sealing and overflow fixture, a plastic housing, and a hot melt nut provided by this utility model;

[0029] Figure 4 A schematic diagram of the structure of the hot melt nut involved in the through-hole hot melt nut sealing adhesive jig provided by this utility model;

[0030] Figure 5This utility model provides a cross-sectional view of the structure of a through-hole hot melt nut sealing and overflow fixture when it is used in conjunction with a plastic shell and a hot melt nut.

[0031] Illustration: Fixture base 1; mounting hole 101; elastic pressing element 2; pressing body 201; pressing part 2011; protruding part 2012; connecting part 2013; mounting groove 2014; elastic element 202; thermoplastic nut 3; top surface of thermoplastic nut 301; bottom surface of thermoplastic nut 302; plastic shell 4; implantation through hole 401. Detailed Implementation

[0032] This utility model discloses a through-hole hot melt nut sealing fixture and a hot melt nut implantation device, which is used to solve the technical problem that when the existing hot melt nut is implanted into the plastic shell, the excess glue easily accumulates on the bottom surface of the hot melt nut, thus causing the screw to be unable to be properly fastened.

[0033] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 5 The present invention provides a through-hole hot melt nut sealing adhesive overflow jig, including jig base 1, the jig base 1 is provided with a support position for supporting plastic shell 4, and the plastic shell 4 is provided with an implantation through hole 401 for implanting hot melt nut 3;

[0035] The support position is provided with a mounting hole 101 coaxially arranged with the implantation through hole 401. An elastic pressing member 2 is provided in the mounting hole 101, which can extend and retract relative to the mounting hole 101. The elastic pressing member 2 tends to be exposed out of the mounting hole 101 so as to always press against the bottom end face of the thermoplastic nut 3 implanted in the implantation through hole 401.

[0036] It should be noted that the thermoplastic nut 3 in this embodiment has a threaded hole that penetrates its interior. The bottom surface of the thermoplastic nut 3 is the mounting surface for the screw. During the insertion of the thermoplastic nut 3 into the plastic housing 4, the bottom surface of the thermoplastic nut 3 is first inserted into the insertion through hole 401. Simply put, the insertion direction of the thermoplastic nut 3 is opposite to the final screw fastening direction, thereby enhancing the pull-out force of the thermoplastic nut 3 and minimizing the possibility of the thermoplastic nut 3 detaching from the plastic housing 4.

[0037] In this embodiment of the fixture, when it is necessary to insert the hot melt nut 3 into the plastic shell 4, the plastic shell 4 is first placed on the support position of the fixture base 1, and then the hot melt nut 3 is inserted into the insertion through hole 401 through the nut insertion mechanism. Since the elastic pressing member 2 is elastic and exposed in the mounting hole 101, during the insertion of the hot melt nut 3, the elastic pressing member 2 can always press against the bottom end face of the hot melt nut 3 to avoid the accumulation of excess glue on the bottom end face of the hot melt nut 3. During this process, under the protection of the elastic pressing member 2, all excess glue can only be squeezed to the outer periphery of the hot melt nut 3, effectively avoiding the accumulation of excess glue on the bottom end face of the hot melt nut 3, ensuring that the subsequent screw-locking process is not affected, and also avoiding the need to use CNC equipment to perform secondary processing on the excess glue, thereby affecting production efficiency.

[0038] Furthermore, the elastic pressing member 2 in this embodiment includes an elastic member 202 and a pressing body 201;

[0039] The elastic element 202 is located inside the mounting hole 101, with one end connected to the mounting hole 101 and the other end connected to the bottom of the pressing body 201.

[0040] It should be noted that the elastic element 202 mentioned above can be a spring, wherein the spring tends to drive the pressing body 201 to protrude outward from the fixture base 1 so as to always press against the bottom end face of the hot melt nut 3.

[0041] Furthermore, the pressing body 201 in this embodiment includes a pressing part 2011 for pressing against the bottom end face of the hot melt nut 3 and a protruding part 2012 extending into the threaded hole of the hot melt nut 3.

[0042] The protruding portion 2012 is connected to the center of the pressing portion 2011.

[0043] It should be noted that, through the above design, during the process of inserting the thermoplastic nut 3 into the through hole 401, the protruding part 2012 extends into the threaded hole of the thermoplastic nut 3 to achieve the positioning function, ensuring that the pressing part 2011 around the protruding part 2012 can accurately press against the bottom end face of the thermoplastic nut 3.

[0044] Furthermore, in this embodiment, the mounting hole 101 has a guide groove on its wall, and the pressing body 201 also includes a connecting part 2013 that connects to the bottom surface of the pressing part 2011. The connecting part 2013 is inserted into the mounting hole 101, and the outer side wall of the connecting part 2013 is provided with a guide protrusion that cooperates with the guide groove.

[0045] Both the guide protrusion and the guide groove extend along the axial direction of the mounting hole 101, and the guide protrusion and the guide groove are slidably connected.

[0046] It should be noted that the above design ensures that the pressing body 201 will not shift left or right during the compression process into the mounting hole 101, thus ensuring the accuracy of the displacement of the pressing body 201.

[0047] In addition, it should be noted that the connecting part 2013, the pressing part 2011 and the protruding part 2012 mentioned above are all integral structures, thereby ensuring the structural stability of the pressing body 201.

[0048] Furthermore, in this embodiment, the bottom surface of the connecting portion 2013 is recessed into the interior of the connecting portion 2013 to form a mounting groove 2014, and one end of the elastic member 202 is connected to the mounting groove 2014.

[0049] It should be noted that the design of the mounting groove 2014 provides mounting space for one end of the elastic element 202, ensuring the connection stability between the elastic element 202 and the pressing body 201.

[0050] Furthermore, in this embodiment, the support position is a positioning groove that matches the shape of the plastic shell 4. The positioning groove is recessed into the interior of the fixture base 1, and the mounting hole 101 is opened on the inner bottom wall of the positioning groove.

[0051] It should be noted that the above design makes it easy for operators to position the plastic housing 4 on the fixture base 1, thus preventing the plastic housing 4 from shifting during the nut insertion process.

[0052] Furthermore, the aforementioned positioning groove is provided with a plurality of positioning pins for positioning and engaging with the positioning holes of the plastic housing 4.

[0053] It should be noted that the positioning of the positioning pin and the positioning hole can prevent the plastic housing 4 from shifting horizontally relative to the positioning groove.

[0054] In addition, the positioning groove is also provided with multiple vacuum adsorption holes;

[0055] The vacuum adsorption hole is connected to a vacuum pipeline, and a vacuum generator is connected to the vacuum pipeline.

[0056] It should be noted that, through the above design, the adsorption force generated by the vacuum adsorption hole can firmly adsorb and fix the plastic shell 4 in the positioning groove, preventing the plastic shell 4 from shifting during the insertion of the hot melt nut 3.

[0057] Please see Figures 1 to 5 The present invention provides a hot melt nut implantation device, including a nut implantation mechanism, a machine base, and the above-mentioned through-hole hot melt nut sealing adhesive overflow fixture;

[0058] The through-hole hot melt nut sealing adhesive fixture is installed on the machine base.

[0059] It should be noted that in the fixture of this embodiment, when the nut insertion mechanism inserts the hot melt nut 3 into the plastic housing 4, the plastic housing 4 is first placed on the support position of the fixture base 1, and then the hot melt nut 3 is inserted into the insertion through hole 401 by the nut insertion mechanism. Since the elastic pressing member 2 is elastic and exposed in the mounting hole 101, during the insertion of the hot melt nut 3, the elastic pressing member 2 can always press against the bottom end face of the hot melt nut 3 to avoid the accumulation of excess glue on the bottom end face of the hot melt nut 3. During this process, under the protection of the elastic pressing member 2, all excess glue can only be squeezed to the outer periphery of the hot melt nut 3, effectively avoiding the accumulation of excess glue on the bottom end face of the hot melt nut 3, ensuring that the subsequent screw tightening process is not affected, and also avoiding the need to use CNC equipment to perform secondary processing on the excess glue, thereby affecting production efficiency.

[0060] The above provides a detailed description of a through-hole hot melt nut sealing fixture and a hot melt nut implantation device provided by this utility model. For those skilled in the art, based on the ideas of the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fixture for sealing excess adhesive in through-hole thermoplastic nuts, characterized in that, It includes a jig base (1), on which a support position for supporting a plastic shell (4) is provided, and on which an implantation through hole (401) for implanting a hot melt nut (3) is provided. The support position is provided with an installation hole (101) coaxially arranged with the implantation through hole (401). An elastic pressing member (2) that can telescopically move relative to the installation hole (101) is provided in the installation hole (101). The elastic pressing member (2) tends to be exposed in the installation hole (101) so as to always press against the bottom end face of the hot melt nut (3) implanted in the implantation through hole (401).

2. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 1, characterized in that, The elastic pressing member (2) includes an elastic member (202) and a pressing body (201); The elastic element (202) is located inside the mounting hole (101) with one end connected to the mounting hole (101) and the other end connected to the bottom of the pressing body (201).

3. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 2, characterized in that, The pressing body (201) includes a pressing part (2011) for pressing against the bottom end face of the hot melt nut (3) and a protruding part (2012) extending into the threaded hole of the hot melt nut (3). The protruding part (2012) is connected to the center of the pressing part (2011).

4. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 3, characterized in that, The mounting hole (101) has a guide groove on its wall. The pressing body (201) also includes a connecting part (2013) that connects to the bottom surface of the pressing part (2011). The connecting part (2013) is inserted into the mounting hole (101) and the outer side wall of the connecting part (2013) is provided with a guide protrusion that cooperates with the guide groove. Both the guide protrusion and the guide groove extend along the axial direction of the mounting hole (101), and the guide protrusion and the guide groove are slidably connected.

5. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 4, characterized in that, The bottom surface of the connecting part (2013) is recessed into the interior of the connecting part (2013) to form a mounting groove (2014), and one end of the elastic member (202) is connected to the mounting groove (2014).

6. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 2, characterized in that, The elastic element (202) is a spring.

7. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 1, characterized in that, The support is a positioning groove that matches the shape of the plastic shell (4). The positioning groove is recessed into the interior of the fixture base (1). The mounting hole (101) is opened on the inner bottom wall of the positioning groove.

8. The through-hole hot melt nut sealing adhesive overflow fixture according to claim 7, characterized in that, The positioning groove is provided with a number of positioning pins for positioning and engaging with the positioning holes of the plastic shell (4).

9. The through-hole hot-melt nut sealing adhesive overflow fixture according to claim 8, characterized in that, The positioning groove is also provided with multiple vacuum adsorption holes; The vacuum adsorption hole is connected to a vacuum pipeline, and a vacuum generator is connected to the vacuum pipeline.

10. A thermosetting nut insertion device, characterized in that, Includes a nut insertion mechanism, a machine base, and a through-hole hot melt nut sealing adhesive overflow fixture as described in any one of claims 1-9; The through-hole hot melt nut sealing adhesive fixture is installed on the machine base.

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