A production process that facilitates injection molding and secondary reinforcement of the structure

Abstract

The present invention discloses a production process that is convenient for injection molding and secondary reinforcement of the structure, comprising the following steps: step one, obtaining two mutually independent left and right halves by injection molding with an injection molding machine, the left half comprising a left main body and a left cantilever, the right half comprising a right main body and a right cantilever, the left main body forming a left reinforcement groove, and the right main body forming a right reinforcement groove; step two, assembling the left and right halves together, the left reinforcement groove and the right reinforcement groove being mutually connected to obtain an area to be reinforced; step three, obtaining a reinforcing rib; step four, placing the reinforcing rib in the area to be reinforced, heating the reinforcing rib using a high-temperature heating device, the reinforcing rib conducting heat to the colloid in the area to be reinforced, the colloid being heated and being glued together with the reinforcing rib. The present invention designs the handle injection molded part into two independent parts, and then reinforces the cantilever of the handle injection molded part by secondary reinforcement, thereby obtaining an injection molded part as a whole with a stable structure.

Description

Technical Field

[0001] The invention relates to the technical field of mold injection production, in particular to a production process that is convenient for injection molding and secondary reinforcement of the structure. Background Art

[0002] like Figure 1 and Figure 2 The figures show an assembled view and an exploded view of a handle injection molded part 10. During the product design phase, the handle injection molded part 10 is designed into two independent parts: a left half 11 and a right half 12. This design facilitates injection molding. After the left and right halves 11, 12 are independently obtained by injection molding, they are assembled to form the entire handle injection molded part 10.

[0003] Depend on Figure 1 and Figure 2 It can be seen that both the left half 11 and the right half 12 include a main body 13 and a cantilever 14. When the left half 11 and the right half 12 are assembled, the main body 13 is fixed by means of locking screws, while the cantilever 14 cannot be effectively fixed due to its thin thickness. This will make the cantilever 14 of the assembled handle injection molded part 10 prone to shaking, thereby causing the overall structural strength of the handle injection molded part 10 to be low.

[0004] It should also be noted that, based on mold injection molding process considerations, if the handle injection molding part 10 is not divided into independent left half 11 and right half 12, but the handle injection molding part 10 is injection molded as a whole, on the one hand, it cannot be injection molded, and on the other hand, the relevant parts cannot be assembled in the cavity of the injection molding part.

[0005] Therefore, during the design process, it is still considered to design the handle injection molded part 10 into two independent parts, and then reinforce the cantilever 14 of the handle injection molded part 10 through secondary reinforcement, so as to obtain a structurally stable injection molded part as a whole. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a production process that is convenient for injection molding and secondary reinforcement of the structure.

[0007] The object of the present invention is achieved through the following technical solutions:

[0008] A production process that facilitates injection molding and secondary reinforcement of the structure includes the following steps:

[0009] Step 1: Injection molding two independent left and right halves using an injection molding machine, wherein the left half includes an integrally formed left main body and a left cantilever, and the right half includes an integrally formed right main body and a right cantilever, a left reinforcement groove is formed at the edge of the left main body, and a right reinforcement groove is formed at the edge of the right main body;

[0010] Step 2: Assemble the left and right halves together, fasten the left and right main bodies together with fasteners, and connect the left and right reinforcement grooves to form an area to be reinforced;

[0011] Step 3: Obtain the reinforcement ribs and bend and contour the reinforcement ribs according to the shape of the area to be reinforced;

[0012] Step 4: Place the reinforcing ribs in the area to be reinforced and heat the reinforcing ribs using a high-temperature heating device. The reinforcing ribs transfer the heat to the colloid in the area to be reinforced, and the colloid melts due to the heat and adheres to the reinforcing ribs.

[0013] In one embodiment,

[0014] In step 1, a left comb tooth bar is formed in the left reinforcement groove along its extension line direction, the left comb tooth bar including a plurality of left convex teeth distributed in sequence and at intervals; a right comb tooth bar is formed in the right reinforcement groove along its extension line direction, the right comb tooth bar including a plurality of right convex teeth distributed in sequence and at intervals;

[0015] In step 2, the left half and the right half are assembled to obtain a handle injection molded part, the handle injection molded part having an outer surface and an inner surface, and the area to be reinforced obtained by the left reinforcement groove and the right reinforcement groove penetrating each other is located on the inner surface;

[0016] In step 4, the reinforcement rib transfers heat to the left and right convex teeth of the area to be reinforced. The left and right convex teeth melt due to the heat and flow into the surrounding gaps and adhere to the reinforcement rib.

[0017] In one embodiment, in step four, when heating the reinforcing rib, single-point local heating is adopted to form a plurality of heating points spaced in sequence along the extension lines of the left reinforcement groove and the right reinforcement groove, and each heating point is heated by a high-temperature heating device.

[0018] In one embodiment, the high temperature heating device is a laser welding machine.

[0019] In one embodiment, the high temperature heating device is a hot air gun.

[0020] In one embodiment, the high temperature heating device is an electric heating rod.

[0021] In one embodiment, in step three, the reinforcing rib is made of aluminum alloy, and a bending machine is used to bend and sculpt the reinforcing rib.

[0022] The present invention designs the handle injection molded part into two independent parts, and then reinforces the cantilever of the handle injection molded part by means of secondary reinforcement, thereby obtaining an injection molded part with a stable structure as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a combined diagram of a handle injection molded part in the prior art;

[0025] Figure 2 for Figure 1 An exploded view of a prior art handle injection molded part is shown;

[0026] Figure 3 FIG1 is an assembly diagram of an injection molded handle according to an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Exploded view of the injection molded handle shown (a);

[0028] Figure 5 for Figure 3 The assembly diagram of the handle injection molded part shown in (2);

[0029] Figure 6 for Figure 3 Exploded view of the injection molded handle shown (II);

[0030] Figure 7 for Figure 3 Exploded view of the handle injection molded part shown (c). DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The present invention discloses a production process that facilitates injection molding and secondary reinforcement of the structure, comprising the following steps:

[0035] Step 1: Use an injection molding machine to obtain two independent left and right halves 100 and 200 (such as Figure 3 As shown), the left half 100 includes an integrally formed left main body 110 and a left cantilever 120 (as shown Figure 4 As shown), the right half 200 includes an integrally formed right body 210 and a right cantilever 220 (as shown Figure 4 As shown), a left reinforcement groove 111 is formed at the edge of the left main body 110 (as shown Figure 7 As shown), a right reinforcement groove 211 is formed at the edge of the right main body 210 (as shown Figure 7 shown);

[0036] Step 2: Assemble the left half 100 and the right half 200 together, use fasteners (screws, etc.) to fasten the left main body 110 and the right main body 210 together, and connect the left reinforcement groove 111 and the right reinforcement groove 211 to obtain the area to be reinforced 300 (such as Figure 6 shown);

[0037] Step 3: Obtain the reinforcing rib 400 and bend and sculpt the reinforcing rib 400 according to the shape of the area to be reinforced 300. In this embodiment, the reinforcing rib 400 is made of aluminum alloy and is bent and sculpted using a bending machine.

[0038] Step 4: Figure 5 and Figure 6As shown, a reinforcing rib 400 is placed in the area to be reinforced 300 and heated using a high-temperature heating device. The reinforcing rib 400 transfers heat to the colloid in the area to be reinforced, causing the colloid to melt and adhere to the reinforcing rib 400. In this embodiment, the high-temperature heating device is preferably a laser welder. In other embodiments, the high-temperature heating device is a heat gun or an electric heating rod.

[0039] In step 1, a left comb tooth bar 112 is formed in the left reinforcement groove 111 along its extension line (eg Figure 7 As shown), the left comb tooth bar 112 includes a plurality of left convex teeth distributed in sequence; the right reinforcing groove 211 is formed along its extension line direction to form a right comb tooth bar 212 (as shown Figure 7 As shown), the right comb tooth bar 212 includes a plurality of right convex teeth spaced apart in sequence;

[0040] In step 2, the left half 100 and the right half 200 are assembled to obtain a handle injection molded part 20. The handle injection molded part 20 has an outer surface and an inner surface. The area to be reinforced 300 formed by the left reinforcement groove 111 and the right reinforcement groove 211 penetrating each other is located on the inner surface.

[0041] In step 4, the reinforcing rib 400 conducts heat to the left and right protruding teeth of the area to be reinforced 300 . The left and right protruding teeth melt due to the heat and flow into the surrounding gaps and adhere to the reinforcing rib 400 .

[0042] During the design stage, the handle injection molding is designed into two independent parts, which facilitates mold injection and subsequent assembly; two independent left halves 100 and right halves 200 are obtained by injection molding using an injection molding machine, wherein the left half 100 includes an integrally molded left main body 110 and a left cantilever 120, and the right half 200 includes an integrally molded right main body 210 and a right cantilever 220.

[0043] In the present invention, the structures of the left cantilever 120 and the right cantilever 220 are particularly adjusted to be different from the traditional structures, for example, Figure 7 As shown, a left reinforcement groove 111 is formed on the edge of the left main body 110, and a right reinforcement groove 211 is formed on the edge of the right main body 210. This is to prepare for subsequent secondary reinforcement of the structure. It should also be noted that the formation of the left reinforcement groove 111 on the edge of the left main body 110 and the right reinforcement groove 211 on the edge of the right main body 210 is also easy to achieve during mold injection.

[0044] After the left and right halves 100 and 200 are independently molded by an injection molding machine, the left and right halves 100 and 200 are assembled and fastened together using fasteners to secure the left and right main bodies 110 and 210. As shown in the figure, the left and right main bodies 110 and 210 are securely secured together by the fasteners, while the left and right cantilevers 120 and 220 cannot be effectively secured due to their thinness. This makes the cantilevers of the assembled injection-molded handle easily shake, which in turn results in a low overall structural strength of the injection-molded handle.

[0045] To solve this technical problem, reinforcing ribs 400 can be used in the later stages of assembly. The reinforcing ribs 400 are bent and shaped according to the shape of the area to be reinforced 300. For example, for a batch of injection-molded handle parts, the shape of the area to be reinforced 300 is the same, and a bending machine can be used to bend the metal strips to obtain a large number of reinforcing ribs 400.

[0046] After obtaining the reinforcing rib 400, it is placed in the area to be reinforced 300 and heated using a high-temperature heating device. The rib 400 conducts heat to the colloid in the area to be reinforced, causing the colloid to melt and adhere to the rib 400. In this way, the left cantilever 120 and the right cantilever 220 are reinforced by the reinforcing rib 400, making them less susceptible to shaking and enhancing the overall structural strength of the injection-molded handle. It should be noted that in the present invention, the metal reinforcing rib 400 is heated and then indirectly transferred to the colloid via heat conduction, causing the colloid to melt and secure the rib 400. Directly applying heat to the colloid would be unfeasible, as the colloid would quickly melt and deform. Since the reinforcing rib 400 is made of metal, it can withstand greater heat without deformation. Heat conduction evenly transfers heat to the colloid, causing it to heat evenly and fuse to the reinforcing rib 400.

[0047] In the present invention, heat is mainly transferred to the colloid in the area to be reinforced by heat conduction. The colloid melts under the heat and adheres to the reinforcing rib 400. During the melting process of the colloid, the colloid will expand and overflow from the groove, which is prone to bulging, and the inner and outer surfaces of the handle injection molded part will become uneven. In order to solve this technical problem, in the present invention, a left comb tooth bar 112 (such as Figure 7 As shown), the left comb tooth bar 112 includes a plurality of left convex teeth distributed in sequence; the right reinforcing groove 211 is formed along its extension line direction to form a right comb tooth bar 212 (as shown Figure 7 As shown), the right comb tooth bar 212 includes a plurality of right convex teeth distributed in sequence.

[0048] It can be seen that the reinforcing rib 400 will first conduct heat to the left comb tooth bar 112 and the right comb tooth bar 212. After the protruding teeth on the comb tooth bars melt, they will flow to the surrounding gaps, thereby filling the gaps. In this way, bulging will not easily occur, and the inner and outer surfaces of the handle injection molded part will become smoother.

[0049] It should be noted that in the present invention, the injection-molded handle 20 has an outer surface and an inner surface, and the area to be reinforced 300 formed by the interpenetration of the left and right reinforcement grooves 111 and 211 is located on the inner surface. In other words, the present invention places the area to be reinforced 300 on the inner surface of the injection-molded handle, which is based on product appearance considerations. The reinforcing ribs 400, along with the melted gel, are concealed on the inner surface and do not affect the product's appearance.

[0050] In addition, considering that the assembled handle injection molded part 20 may need to be disassembled in some cases to replace or repair the internal parts, and according to the above, the melted colloid has been glued to the reinforcing rib 400, the reinforcing rib 400 will be difficult to remove.

[0051] In order to solve this technical problem, the present invention makes the following improvements:

[0052] On the one hand, a left comb tooth bar 112 is formed in the left reinforcement groove 111 along its extension line direction (such as Figure 7 As shown), the left comb tooth bar 112 includes a plurality of left convex teeth distributed in sequence; the right reinforcing groove 211 is formed along its extension line direction to form a right comb tooth bar 212 (as shown Figure 7 As shown), the right comb tooth bar 212 includes a plurality of right convex teeth distributed in sequence;

[0053] On the other hand, based on the above-mentioned structure of the left comb tooth bar 112 and the right comb tooth bar 212, the present invention adopts single-point local heating when heating the reinforcing rib 400. That is, a plurality of sequentially spaced heating points are formed along the extension line of the left reinforcement groove 111 and the right reinforcement groove 211, and each heating point is heated using a high-temperature heating device. In this way, only a portion of the left and right convex teeth will melt and adhere to the reinforcing rib 400. When the reinforcing rib 400 needs to be removed, removal will be easier because only partial adhesion is achieved. After the internal parts are replaced or repaired, when the reinforcing rib 400 needs to be heated again, since some unused convex teeth are still available, these unused convex teeth can be melted and adhered to the reinforcing rib 400.

[0054] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A production process that facilitates injection molding and secondary reinforcement of the structure, characterized in that: The steps include: Step 1: Two independent left and right halves are obtained by injection molding using an injection molding machine, wherein the left half includes an integrally formed left main body and a left cantilever, and the right half includes an integrally formed right main body and a right cantilever, a left reinforcement groove is formed at the edge of the left main body, and a right reinforcement groove is formed at the edge of the right main body; a left comb tooth bar is formed in the left reinforcement groove along its extension direction, and the left comb tooth bar includes a plurality of left convex teeth distributed in sequence; a right comb tooth bar is formed in the right reinforcement groove along its extension direction, and the right comb tooth bar includes a plurality of right convex teeth distributed in sequence; Step 2: Assemble the left and right halves together, fasten the left and right main bodies together with fasteners, and connect the left and right reinforcement grooves to form an area to be reinforced; Step 3: Obtain the reinforcement ribs and bend and contour the reinforcement ribs according to the shape of the area to be reinforced; Step 4: Place the reinforcing ribs in the area to be reinforced and heat them using a high-temperature heating device. The reinforcing ribs transfer the heat to the colloid in the area to be reinforced, and the colloid melts due to the heat and adheres to the reinforcing ribs. The reinforcing ribs transfer the heat to the left and right convex teeth in the area to be reinforced, and the left and right convex teeth melt due to the heat and flow to the surrounding gaps and adhere to the reinforcing ribs.

2. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 1, characterized in that: In step 2, the left half and the right half are assembled together to obtain a handle injection molded part, which has an outer surface and an inner surface, and the area to be reinforced obtained by the left reinforcement groove and the right reinforcement groove penetrating each other is located on the inner surface.

3. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 2, characterized in that: In step 4, when heating the reinforcing rib, single-point local heating is adopted to form a plurality of heating points spaced in sequence along the extension lines of the left and right reinforcement grooves, and each heating point is heated by a high-temperature heating device.

4. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 1 or 2, characterized in that: The high-temperature heating device is a laser welding machine.

5. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 1 or 2, characterized in that: The high temperature heating device is a hot air gun.

6. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 1 or 2, characterized in that: The high temperature heating device is an electric heating rod.

7. The production process for facilitating injection molding and performing secondary reinforcement on the structure according to claim 1, characterized in that: In step three, the reinforcing rib is made of aluminum alloy and is bent and shaped using a bending machine.

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