A special head cover assembly positioning, fastening and auxiliary assembly tool

Abstract

The application discloses a special-shaped head cover assembly positioning, fastening and auxiliary assembly tool, which comprises two parts of a first workpiece and a second workpiece. The first workpiece and the second workpiece are connected through the special-shaped head cover. The first workpiece comprises a base, a positioning support, a limiting column and a clamp. The second workpiece comprises a main body, a blocking rod and a handle. The special-shaped rotary shell tip is vertically downward and falls into the positioning support of the first workpiece to be supported and positioned, then the clamp tightly holds the shell upper end column surface part, the shell is completely positioned and fastened, and after the internal assembly is sequentially completed, the blocking rod of the second workpiece is inserted into the groove of the electronic cabin to realize the screwing and installation of the electronic cabin. The structure of the application is simple in welding, the installation difficulty of the special-shaped head cover is reduced, and the tightness and the safety of the worker installation are improved.

Description

Technical Field

[0001] This invention belongs to the field of process equipment technology, specifically involving a set of positioning, fastening and auxiliary assembly tooling for irregularly shaped headgear components, which has the characteristics of simple structure and convenient operation. Background Technology

[0002] The main component of a certain product's irregularly shaped headgear assembly is an irregularly shaped rotating shell. During assembly, internal fillers such as cushioning pads must be inserted into this shell sequentially before finally screwing it into the electronics compartment. To ensure assembly quality, the irregularly shaped rotating shell must be kept vertical during assembly and adhesive curing. However, due to the shell's weight and size, manual installation without auxiliary tools presents significant challenges. Workers cannot guarantee the verticality of the tooling during manual installation. Tightening screws manually can easily lead to misalignment, causing uneven friction between the screw and its wall hole, resulting in scratches or damage to the smooth or threaded holes. Furthermore, manual installation requires physical assistance to overcome the irregular gaps in the headgear and to position the tooling, significantly increasing safety hazards and reducing efficiency. In addition, the irregular shape of this type of headgear, with its curved surfaces, can cause uneven force during fitting, resulting in gaps on one side and smaller gaps on the other. This not only affects the application of structural adhesive but can also damage internal structures such as wiring within the headgear.

[0003] Currently, the factory lacks tools to safely and stably place irregularly shaped rotating housings vertically, and also lacks suitable tightening tools for the final step of screwing in the electronic compartment. Therefore, a set of dedicated assembly fixtures needs to be designed. Summary of the Invention

[0004] This invention aims to solve the aforementioned technical problems in related technologies. To this end, this invention proposes a positioning, fastening, and auxiliary assembly fixture for irregularly shaped headgear components, reducing the installation difficulty of irregularly shaped headgears, improving the tightness of workpiece installation, and enhancing worker safety during installation. To achieve the above objectives, the technical solution provided by this invention is as follows:

[0005] A positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly includes a first workpiece and a second workpiece, which are connected by the non-standard headgear. The first workpiece is a shell fixing fixture, including a base, a positioning bracket, a clamp, and a limiting post. The positioning bracket is fixedly installed on the base, and the limiting post is installed on the upper end of the positioning bracket. The clamp is connected to the limiting post and its vertical movement is restricted by the cotter pin hole at the upper end of the limiting post.

[0006] The base has a central hole to prevent collision with the tip of the vertically placed irregularly shaped rotating shell and to lower the center of gravity of the device during use. The base is equipped with casters to level the device and allow it to move freely.

[0007] Furthermore, the positioning bracket is fixedly installed on the base by positioning pins and bolts. The positioning bracket adopts a structural design of "contour containment" and "four-point centering". Four positioning brackets are evenly distributed around the circumference of the irregular rotating shell to form a four-point centering structure. The side of each positioning bracket facing the irregular rotating shell is a contour working surface. Epoxy resin structural adhesive is used to attach a rubber plate to the contour working surface to fully fit the arc-shaped outer surface of the lower section of the irregular rotating shell, thereby forming a contour containment structure to contain, support and position the lower section of the irregular rotating shell.

[0008] Furthermore, the limiting post is installed at the top of the positioning bracket, the middle stepped surface is used for axial positioning of the clamp, and the upper cotter pin hole is used to restrict the up and down movement of the clamp.

[0009] Furthermore, the clamp includes a large clamp and a small clamp, both of which are semi-circular ring parts. The large clamp has a first through hole and a threaded through hole at both ends, and the small clamp has a second through hole at both ends. The large clamp is installed on the limiting post through the threaded through hole, and the small clamp is connected to the large clamp by screws passing through the first through hole and the second through hole of the small clamp to form a containing cylindrical surface. The inner working surface of the containing cylindrical surface is fitted with a rubber plate using countersunk screws to clamp and fix the protruding cylindrical surface in the middle section of the irregular rotating shell. The clamping force of the containing cylindrical surface formed by the large and small clamps can be adjusted by the screwing in of the screws at both ends.

[0010] Furthermore, the second workpiece is an electronic cabin tightening fixture, which adopts a dual-handle steering wheel structure, including a main body, a stop bar, and a handle. The main body is used to install and connect the stop bar and the handle.

[0011] Furthermore, the main body adopts a circular ring-shaped part with handles symmetrically installed on both sides of its outer periphery. The handles are used to provide a stable grip point and facilitate the operator to exert force. The end face has symmetrical light holes for installing stop bars, and the surface of the handles is knurled to enhance grip and anti-slip ability.

[0012] Beneficial effects

[0013] According to the above-mentioned technical solution, the beneficial effects of the positioning, fastening and auxiliary assembly fixture for irregularly shaped headgear components provided by the present invention are as follows:

[0014] (1) The pointed end of the irregular rotating shell falls vertically downward into the positioning bracket for containment and support positioning. Then, the upper cylindrical part of the shell is clamped by the clamp to achieve complete tight fixing of the shell. After the internal components are installed in sequence, the stop bar of the electronic compartment tightening fixture is inserted into the groove of the electronic compartment to achieve the tightening installation of the electronic compartment. This greatly reduces the difficulty of installing the irregular head cover, shortens the assembly auxiliary time, improves production efficiency, and is suitable for mass production.

[0015] (2) Through the combination of the base, the positioning bracket with the "contouring" and "four-point centering" structure, the limiting column and the clamp, it can fully fit the arc-shaped outer surface of the lower section of the irregular rotating shell, thereby providing containment support and positioning for the lower section of the irregular rotating shell, and constraining it to the only correct spatial position. This eliminates the positioning error caused by manual installation and the gap caused by uneven force applied to each component during installation, and improves the tightness of the tooling installation. In addition, the tooling is equipped with a rubber plate inside, which avoids the shell scratches caused by manual turning and the pressure damage to the internal structure, and also ensures the safety of the workers during installation. Attached Figure Description

[0016] Figure 1 General drawing of the fixture for fixing the shell;

[0017] Figure 2 General drawing of the tightening fixture for the electronic compartment;

[0018] Figure 3 Structural diagram of the base for fixing the housing;

[0019] Figure 4 Diagram of the clamp structure for fixing the shell.

[0020] The labels in the diagram indicate:

[0021] I. Irregularly shaped rotating shell; 1. Base; 2. Positioning bracket; 3. Limiting post; 4. Clamp; J. Electronic compartment; 5. Main body; 6. Handle; 7. Stop bar; 101. Upper connecting plate; 102. Square tube frame; 103. Fuma wheel mounting plate; 104. Fuma wheel; 401. Large clamp; 402. Small clamp; 403. Large rubber plate; 404. Small rubber plate. Detailed Implementation

[0022] The invention will now be described in detail with reference to the accompanying drawings.

[0023] The housing fixing fixture in this invention consists of a base 1, a positioning bracket 2, a limiting post 3, and a clamp 4.

[0024] like Figure 3 As shown, the base 1 consists of an upper connecting plate 101, a square tube frame 102, a fuma wheel mounting plate 103, and fuma wheels 104. The upper connecting plate 101 has several open holes and countersunk holes machined on its surface. The open holes are used to connect the positioning bracket 2, and the countersunk holes are used to connect the upper connecting plate 101 and the square tube frame 102 via bolts. The fuma wheel mounting plate 103 is fixed to the four corners of the lower end face of the square tube frame 102 by welding and is used to install the fuma wheels 104. The fuma wheels 104 are used to support the overall weight of the device, adjust its level, and ensure that the device can move freely and smoothly.

[0025] Four positioning brackets 2 are evenly distributed at 90° intervals on the base 1, with a hollow center for weight reduction. Two threaded blind holes and one open hole are located at each end of the bottom. The open hole at the bottom is used to engage with positioning pins for initial positioning of the positioning bracket 2. The threaded blind holes at the bottom are used to engage with the upper connecting plate 101, and the positioning bracket 2 is fixed to the upper connecting plate 101 with screws. The arc-shaped surface of the positioning bracket 2 near the center of the device is the working surface. Based on the principle of contour envelopment, the contour of this working surface matches the generatrix of the lower arc-shaped outer surface of the irregularly shaped rotating shell I. One to three layers of buffer rubber are bonded to the working surface with epoxy resin structural adhesive to achieve soft contact between the positioning bracket 2 and the irregularly shaped rotating shell I, avoiding damage to the outer surface of the shell from hard contact.

[0026] The stepped lower section of the limiting post 3 is used to position itself by engaging the top aperture of the positioning bracket 2. The external thread of the lower section is used to engage a nut to fix the limiting post 3 onto the positioning bracket 2. The symmetrical small planes in the middle section of the limiting post 3 provide a clamping force point for the tool to tighten the nut. The stepped upper section of the limiting post 3 is used to position itself by engaging the threaded through hole of the large clamp 401. The top of the upper section has a small hole for installing a cotter pin to restrict the vertical movement of the clamp 4.

[0027] The clamp 4 includes a large clamp 401, a small clamp 402, a large rubber plate 403, and a small rubber plate 404. The large clamp 401 is a semi-circular ring part with two threaded through holes at both ends that cooperate with the limiting post 3 for positioning itself and two light holes for connecting the small clamp. The small clamp 402 is a semi-circular ring part with two light holes at both ends, which can be connected to the two clamp parts by screws with the light holes of the large clamp 401. The large rubber plate 403 and the small rubber plate 404 are respectively installed on the large and small clamps. After the large and small clamps are connected, they form a cylindrical surface to clamp and fix the protruding cylindrical part in the middle section of the shell. The amount of compression deformation of the rubber plate is controlled by adjusting the screw insertion at both ends of the clamp, thereby adjusting the clamping force.

[0028] The electronic cabin tightening fixture of the present invention consists of a main body 5, a handle 6, and a stop bar 7.

[0029] The main body 5 is a circular ring-shaped part. Its two symmetrical small planes and threaded through holes on its outer periphery are used to install handles 6. The two symmetrical light holes on the end face of the main body 5 are used to install stop bars 7. There are two handles 6 in total, and the surface is knurled to enhance grip and anti-slip ability. There are two stop bars 7 in total. The upper part of the stop bar 7 with a stepped surface is inserted into the light hole of the main body 5 for positioning, and then fixedly connected by welding. The outer circular surface of the lower part of the stop bar 7 is the working surface. After being inserted into the groove of the electronic compartment J, the handle 6 is turned to make the main body 5 rotate circumferentially, which will drive the working surface of the stop bar 7 to contact the side wall of the groove of the electronic compartment J and generate an interaction force, thereby driving the electronic compartment J to rotate circumferentially and screwing it into the end of the irregular rotating shell I with the help of its outer peripheral thread.

[0030] How to use

[0031] Housing fixing fixture:

[0032] 1. Leveling the device. Use four 104-wheel adjustment mechanisms to fine-tune the level of the device to avoid the risk of tipping over due to a shift in the center of gravity after the irregularly shaped rotating housing I is placed in.

[0033] 2. Remove the small clamp 402. Unscrew the locking screws connecting the large and small clamps to separate the small clamp 402 from the large clamp 401. Install the irregular-shaped rotary housing I. Place the irregular-shaped rotary housing I vertically downwards into the middle of the positioning bracket 2. Adjust the contact position between the protruding cylindrical part in the middle section of the irregular-shaped rotary housing I and the working surface of the large clamp 401 to ensure that they fit as closely as possible.

[0034] 3. Tighten clamp 4. Install small clamp 402, screw in the locking screws at both ends, adjust the amount of screwing in the locking screws, and thus adjust the clamping force of clamp 4 on irregular rotating housing I.

[0035] Electronic compartment tightening fixture:

[0036] 4. After completing the assembly process in front of the irregular rotating housing I, vertically lower the electronic compartment J into the end of the irregular rotating housing I with the groove facing upward, align the threads, and screw it in slightly.

[0037] 5. Insert the stop bar 7 of the electronic compartment tightening tool into the groove of the electronic compartment J, and turn the handle 6 to control the rotation of the stop bar 7, so as to screw the electronic compartment J into the irregular rotating housing I until the required screwing depth is reached.

Claims

1. A fixture for positioning, fastening, and auxiliary assembly of an irregularly shaped headgear assembly, comprising a first workpiece and a second workpiece, characterized in that: The first workpiece and the second workpiece are connected by a special-shaped head cover. The first workpiece is a shell fixing fixture, including a base, a positioning bracket, a clamp, and a limiting post. The positioning bracket is fixedly installed on the base, and the limiting post is installed on the upper end of the positioning bracket. The clamp is connected to the limiting post and the upper end of the limiting post is used to limit the up and down movement of the clamp.

2. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 1, characterized in that: The base has a central hole to prevent collision with the tip of the vertically placed irregularly shaped rotating shell, and a fuma wheel is installed under the base.

3. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 1, characterized in that: The positioning bracket adopts a structural design of "contour-enclosed" and "four-point centering". Four positioning brackets are evenly distributed around the circumference of the irregular rotating shell to form a four-point centering structure. The side of each positioning bracket facing the irregular rotating shell is a contour-enclosed working surface. Epoxy resin structural adhesive is used to install a rubber plate on the contour-enclosed working surface to fully fit the arc-shaped outer surface of the lower section of the irregular rotating shell, thereby forming a contour-enclosed structure.

4. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 1, characterized in that: The clamps include a large clamp and a small clamp, both of which are semi-circular ring parts. The large clamp has a first light hole and a threaded through hole at both ends, and the small clamp has a second light hole at both ends.

5. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 4, characterized in that: The large clamp is installed on the limiting post through a threaded through hole. The small clamp is connected to the large clamp through a screw passing through the first light hole of the large clamp and the second light hole of the small clamp to form an enclosing cylindrical surface. The inner working surface of the enclosing cylindrical surface is fitted with a rubber plate using countersunk screws.

6. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 5, characterized in that: The clamping force of the containment cylinder composed of the large and small clamps can be adjusted by the amount of screws at both ends.

7. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 1, characterized in that: The second workpiece is an electronic cabin tightening fixture, which adopts a dual-handle steering wheel structure, including a main body, a stop bar, and a handle. The main body is used to install and connect the stop bar and the handle.

8. The positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 7, characterized in that: The main body is made of a circular ring-shaped part, with handles symmetrically installed on both sides of its outer perimeter, and stop bars installed with symmetrical light holes on both sides of its end face.

9. A positioning, fastening, and auxiliary assembly fixture for a non-standard headgear assembly according to claim 7 or 8, characterized in that: The handle surface is knurled to enhance grip and prevent slippage.

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