A soft copper bar positioning die based on interchangeable inserts

Abstract

The application discloses a soft copper bar positioning die based on interchangeable inserts, which comprises a die core, interchangeable inserts, a sliding seat and a clamping mechanism. The sliding seat is arranged adjacent to the die core and can move horizontally relative to the die core. The front end of the interchangeable insert extends above the die core, and the rear end of the interchangeable insert is detachably connected with the sliding seat. The interchangeable insert is provided with a socket, and the front end of the clamping mechanism is used for clamping a plurality of soft copper bars arranged side by side. The rear end of the clamping mechanism is inserted into the socket. The application can reliably align the soft copper bars, and the soft copper bars can overcome various stresses during injection molding and mold opening, thereby improving the injection molding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to injection mold, especially to a soft copper bar positioning mold based on interchangeable inserts. BACKGROUND

[0002] Many electrical parts need to pre-set soft copper bars in the mold cavity during injection molding. After mold closing and injection molding, the soft copper bars and plastic parts are molded together. During this process, the soft copper bars need to be fixed. In the prior art, the end of the soft copper bar that needs to be exposed is embedded in the pre-set interchangeable insert, and then mold closing and injection molding are performed. However, due to the internal stress during injection molding, the soft copper bars are prone to misalignment or angular distortion, so the injection molding is difficult and the injection molding quality is insufficient. In addition, after mold opening, unnecessary stress is generated between the slider and the interchangeable insert, which can easily pull the interchangeable insert and the soft copper bar, affecting the product yield. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a soft copper bar positioning mold based on interchangeable inserts, which can reliably align the soft copper bars and improve the injection molding quality, in view of the deficiencies of the prior art.

[0004] To solve the above technical problems, the present application adopts the following technical solutions.

[0005] A soft copper bar positioning mold based on interchangeable inserts comprises a mold core, an interchangeable insert, a sliding seat and a clamping mechanism. The sliding seat is arranged adjacent to the mold core and can move horizontally relative to the mold core. The front end of the interchangeable insert extends above the mold core, and the rear end of the interchangeable insert is detachably connected to the sliding seat. The interchangeable insert is provided with a socket, and the front end of the clamping mechanism is used to clamp a plurality of soft copper bars arranged side by side. The rear end of the clamping mechanism is inserted into the socket.

[0006] Preferably, the socket penetrates through the front and rear ends of the interchangeable insert, and the rear end of the clamping mechanism is flush with the rear end of the interchangeable insert.

[0007] Preferably, the clamping mechanism comprises a fixed clamping plate and a movable clamping plate. The rear end of the movable clamping plate is hingedly connected to the rear end of the fixed clamping plate. A plurality of sockets are formed in the fixed clamping plate, and the sockets correspond one-to-one to the soft copper bars. One end of the soft copper bar is arranged in the socket. When the movable clamping plate is folded relative to the fixed clamping plate, one end of the soft copper bar is limited in the socket.

[0008] Preferably, the movable clamping plate is in the form of a strip, and the movable clamping plate comprises two rearwardly extending hinge arms. The rear end of the fixed clamping plate forms two hinge shafts, which correspond one-to-one to the hinge arms. The hinge shafts penetrate through the rear end of the hinge arms and are rotatably connected thereto.

[0009] Preferably, a positioning protrusion is formed in the bayonet, and the positioning protrusion passes through the through hole at one end of the flexible copper bar.

[0010] Preferably, the two adjacent bays are connected by a clamping groove, the depth of the clamping groove is less than the depth of the bayonet, the movable clamping plate is clamped in the clamping groove, and a plurality of matching grooves are formed in the front end of the movable clamping plate and are clamped and matched with the edges of the clamping groove.

[0011] Preferably, two vertically arranged I-shaped slide rails are fixed at the front end of the sliding seat, and two vertically extending T-shaped slide grooves are formed at the rear end of the interchangeable insert, the front ends of the two I-shaped slide rails are respectively inserted into the two T-shaped slide grooves, and the I-shaped slide rails and the T-shaped slide grooves are slidingly matched.

[0012] Preferably, a thimble accommodating hole is formed in the bottom of the interchangeable insert, and a thimble assembly for limiting the fixed clamping plate is arranged in the thimble accommodating hole.

[0013] Preferably, the thimble assembly comprises a thimble, a thimble spring and a machine screw, the bottom of the fixed clamping plate is provided with a thimble clamping groove, the thimble accommodating hole is arranged in alignment with the thimble clamping groove, the machine screw is screwed into the lower end of the thimble accommodating hole, the thimble spring is clamped between the thimble and the machine screw, and the upper end of the thimble is clamped and matched with the thimble clamping groove.

[0014] Preferably, a wedge-shaped end is formed at the upper end of the thimble, a thimble slide groove is formed in the bottom of the fixed clamping plate, the rear end of the thimble slide groove extends to the rear end edge of the fixed clamping plate, the front end of the thimble slide groove is arranged adjacent to the thimble clamping groove, and a blocking portion is formed between the front end of the thimble slide groove and the thimble clamping groove.

[0015] In the flexible copper bar positioning mold based on the interchangeable insert, the sliding seat can move close to or away from the mold core under external force, and the mold closing and mold opening actions are performed by controlling the forward and backward sliding of the sliding seat. Before the mold is closed, a plurality of flexible copper bars are inserted side by side into the clamping mechanism, and then the clamping mechanism is inserted into the socket. Under the clamping and fixing action of the clamping mechanism, the plurality of flexible copper bars are reliably positioned in the injection molding area above the mold core. After the mold is closed, injection molding is performed. When the mold is opened, the sliding seat drives the interchangeable insert to slide backward a certain distance to make the interchangeable insert disengage from the clamping mechanism. Then the workpiece with the flexible copper bar is taken out, and the clamping mechanism is removed from one end of the flexible copper bar. Under the clamping and fixing action of the clamping mechanism, the flexible copper bar can be reliably aligned, and the flexible copper bar can overcome various stresses during injection molding and mold opening, thereby improving the quality of injection molding. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A perspective view of the soft copper bar positioning mold based on interchangeable inserts of the present application;

[0017] Figure 2 A partial exploded view of the soft copper bar positioning mold based on interchangeable inserts of the present application Figure 1 ;

[0018] Figure 3 A partial exploded view of the soft copper bar positioning mold based on interchangeable inserts of the present application Figure 2 ;

[0019] Figure 4 A sectional view of the soft copper bar positioning mold based on interchangeable inserts of the present application;

[0020] Figure 5 An assembled structure view of the interchangeable insert and the clamping mechanism;

[0021] Figure 6 A structure view of the clamping mechanism and the soft copper bar before assembly;

[0022] Figure 7 An exploded view of the clamping mechanism;

[0023] Figure 8 A comparative view of the state change of the clamping mechanism when assembling the soft copper bar;

[0024] Figure 9 A structure view of the clamping mechanism, the interchangeable insert and the ejector pin assembly. DETAILED DESCRIPTION

[0025] The present application will be described in more detail below in conjunction with the accompanying drawings and examples.

[0026] The present application discloses a soft copper bar positioning mold based on interchangeable inserts, which, as shown in Figure 1 、 4 to Figure 9 , comprises a mold core 1, an interchangeable insert 2, a sliding seat 3 and a clamping mechanism 4, the sliding seat 3 is arranged adjacent to the mold core 1, and the sliding seat 3 can move horizontally relative to the mold core 1, the front end of the interchangeable insert 2 extends above the mold core 1, the rear end of the interchangeable insert 2 is detachably connected with the sliding seat 3, the interchangeable insert 2 is provided with a socket 20, the front end of the clamping mechanism 4 is used for clamping a plurality of soft copper bars 100 arranged side by side, and the rear end of the clamping mechanism 4 is inserted into the socket 20.

[0027] In the structure, the slide base 3 can be driven by external force to approach or move away from the mold core 1, and the mold closing and opening actions are performed by controlling the forward and backward sliding of the slide base 3. Before the mold closing, the plurality of soft copper bars 100 are inserted into the clamping mechanism 4 side by side, and then the clamping mechanism 4 is inserted into the socket 20. Under the clamping and fixing action of the clamping mechanism 4, the plurality of soft copper bars 100 are reliably positioned in the injection molding area above the mold core 1. After the mold closing, the injection molding is performed. When the mold is opened, the slide base 3 drives the interchangeable insert 2 to slide backward a certain distance to make the interchangeable insert 2 disengage from the clamping mechanism 4. Then the workpiece with the soft copper bar 100 is taken out, and the clamping mechanism 4 is removed from one end of the soft copper bar 100. Under the clamping and fixing action of the clamping mechanism 4, the soft copper bar can be reliably aligned, and the soft copper bar can overcome various stresses during injection molding and mold opening, thereby improving the injection molding quality.

[0028] In combination Figure 4 and Figure 5 As shown in the drawings, the socket 20 penetrates through the front and rear ends of the interchangeable insert 2, and the rear end of the clamping mechanism 4 is flush with the rear end of the interchangeable insert 2. In actual application, the rear end of the clamping mechanism 4 can be in abutment with the front end of the slide base 3, thereby limiting the clamping mechanism 4 in the socket 20.

[0029] Regarding the preferred structure of the clamping mechanism 4, in combination Figure 6 to Figure 8 As shown in the drawings, the clamping mechanism 4 includes a fixed clamping plate 40 and a movable clamping plate 41. The rear end of the movable clamping plate 41 is hingedly connected with the rear end of the fixed clamping plate 40. A plurality of sockets 42 are formed on the fixed clamping plate 40, and the sockets 42 correspond to the soft copper bars 100 one by one. One end of the soft copper bar 100 is arranged in the socket 42. When the movable clamping plate 41 is folded relative to the fixed clamping plate 40, one end of the soft copper bar 100 is limited in the socket 42.

[0030] In the structure, the fixed clamping plate 40 and the movable clamping plate 41 are hingedly connected to realize folding and unfolding. This clamping mode can independently clamp each soft copper bar 100 in the corresponding socket 42, thereby ensuring that the plurality of soft copper bars 100 remain parallel and are reliably positioned.

[0031] Regarding the specific hinged relationship between the fixed clamping plate 40 and the movable clamping plate 41, in the embodiment, the movable clamping plate 41 is in a strip shape, the movable clamping plate 41 comprises two rearwardly extending hinged arms 410, the rear end of the fixed clamping plate 40 is formed with two hinged shafts 400 corresponding to the hinged arms 410, the hinged shafts 400 pass through the rear end of the hinged arms 410 and are rotationally fitted. In the embodiment, the hinged arms 410 are preferably hingedly fitted with the hinged shafts 400 at the rear end of the fixed clamping plate 40, and under the action of the hinged arms 410, position interference between the movable clamping plate 41 and the soft copper bar 100 can be avoided.

[0032] In order to further secure the soft copper bar 100, in the embodiment, a positioning protruding buckle 420 is formed in the clamping hole 42, and the positioning protruding buckle 420 passes through the through hole 101 at one end of the soft copper bar 100.

[0033] As a preferred mode, two adjacent clamping holes 42 are connected by a clamping groove 43, the depth of the clamping groove 43 is less than the depth of the clamping hole 42, the movable clamping plate 41 is clamped in the clamping groove 43, and a plurality of matching grooves 411 are formed at the front end of the movable clamping plate 41 and are clamped and fitted with the edges of the clamping groove 43. Based on the above clamping matching relationship, the overall structure of the movable clamping plate 41 after folding relative to the fixed clamping plate 40 is more reliable, thereby overcoming various stresses generated during injection molding.

[0034] In order to facilitate the assembly of the interchangeable insert 2, the embodiment preferably adopts the mode of inserting the interchangeable insert 2 downward, please refer to Figure 2 and Figure 5 In the embodiment, the front end of the sliding seat 3 is fixed with two vertically arranged I-shaped sliding rails 30, the rear end of the interchangeable insert 2 is formed with two vertically extending T-shaped sliding grooves 21, the front ends of the two I-shaped sliding rails 30 are respectively inserted into the two T-shaped sliding grooves 21, and the I-shaped sliding rails 30 are slidingly fitted with the T-shaped sliding grooves 21.

[0035] When the clamping mechanism 4 is inserted into the socket 20, in order to reliably limit the clamping mechanism 4 and prevent the clamping mechanism 4 from being displaced during injection molding, in the embodiment, please refer to Figure 9 , a thimble accommodating hole 22 is formed at the bottom of the interchangeable insert 2, and a thimble assembly 23 for limiting the fixed clamping plate 40 is arranged in the thimble accommodating hole 22.

[0036] Further, the ejector pin assembly 23 comprises an ejector pin 230, an ejector pin spring 231 and a machine screw 232, the bottom of the fixed clamping plate 40 is provided with an ejector pin clamping groove 401, the ejector pin accommodating hole 22 is arranged in alignment with the ejector pin clamping groove 401, the machine screw 232 is screwed into the lower end of the ejector pin accommodating hole 22, the ejector pin spring 231 is clamped between the ejector pin 230 and the machine screw 232, and the upper end of the ejector pin 230 is clamped in cooperation with the ejector pin clamping groove 401. The limiting relationship of the above-mentioned ejector pin assembly 23 is stable and reliable, and can fully play a limiting role on the fixed clamping plate 40.

[0037] As a preferred mode, the upper end of the ejector pin 230 is formed with a wedge-shaped end head 233, the bottom of the fixed clamping plate 40 is provided with an ejector pin sliding groove 402, the rear end of the ejector pin sliding groove 402 extends to the rear end edge of the fixed clamping plate 40, the front end of the ejector pin sliding groove 402 is arranged adjacent to the ejector pin clamping groove 401, and a blocking part 403 is formed between the front end of the ejector pin sliding groove 402 and the ejector pin clamping groove 401. When the clamping mechanism 4 is inserted into the socket 20, the wedge-shaped end head 233 first slides along the ejector pin sliding groove 402, then the wedge-shaped end head 233 passes over the blocking part 403 and is clamped into the ejector pin clamping groove 401, and the ejector pin sliding groove 402 can guide the wedge-shaped end head 233, which can ensure that the clamping mechanism 4 is accurately inserted into place.

[0038] In combination Figure 1 to Figure 4 As shown in the embodiment, the rear side of the sliding seat 3 is fixed with a sliding block support 7 adjacent thereto, the sliding seat 3 can move forward and backward relative to the sliding block support 7, the top of the sliding block support 7 is provided with an ejector pin stopper 8 which can move up and down, the front side lower end of the ejector pin stopper 8 is provided with a stopper recess 80, the top wall of the stopper recess 80 is formed with an inner inclined surface part 81, the rear end of the sliding seat 3 is fixed with a rear side spade base 6, the rear end of the rear side spade base 6 is formed with a wedge-shaped part 60, the wedge-shaped part 60 is arranged in alignment with the inner inclined surface part 81 and has a preset interval therebetween, the rear side spade base 6 is provided with a rear ejector rod 90 and an ejector rod spring 91, the sliding seat 3 is provided with a front ejector rod 92, the front end of the front ejector rod 92 is arranged in alignment with the rear end of the clamping mechanism 4, the rear end of the front ejector rod 92 is inserted into the rear side spade base 6, and the rear end of the front ejector rod 92 is in abutting cooperation with the front end of the rear ejector rod 90, the rear end of the rear ejector rod 90 extends to the rear side of the rear side spade base 6 and is in abutting cooperation with the inner wall of the stopper recess 80, and the ejector rod spring 91 is used to apply a rearward movement elastic force to the front ejector rod 92 and the rear ejector rod 90, wherein:

[0039] When the mold is closed, the sliding seat 3 slides forward, and the front end of the front ejector rod 92 abuts against the rear end of the clamping mechanism 4;

[0040] When the mold is opened, the slide 3 slides backward, and the front end of the front ejector rod 92 is kept in abutment with the rear end of the clamping mechanism 4 by the abutment of the inner wall of the notch 80. When the wedge-shaped part 60 contacts the inner inclined surface part 81 and drives the ejector pin block 8 to move upward, the front ejector rod 92 and the rear ejector rod 90 are driven by the ejector rod spring 91 to move backward, and the front end of the front ejector rod 92 is separated from the clamping mechanism 4.

[0041] Based on the above structure, when the mold is opened, the slide 3 drives the interchangeable insert 2 to slide backward, and the front ejector rod 92 keeps in abutment with the rear end of the clamping mechanism 4. Under the abutment of the front ejector rod 92, the position of the clamping mechanism 4 does not change, and the interchangeable insert 2 is separated from the clamping mechanism 4 backward. In this process, the clamping mechanism 4 is prevented from being pulled by the interchangeable insert 2, and the soft copper bar 100 is prevented from being deformed by being pulled. When the slide 3 moves to a certain distance and the ejector pin block 8 is driven to move upward by the rear side shovel base 6, the front ejector rod 92 and the rear ejector rod 90 are driven by the ejector rod spring 91 to slide backward synchronously, and the abutment of the clamping mechanism 4 is released. At this time, the clamping mechanism 4 is completely separated from the interchangeable insert 2, and then the injection molded workpiece and the clamping mechanism 4 can be taken down together. Finally, the clamping mechanism 4 is removed from one end of the soft copper bar 100. Based on the above structure, the embodiment can protect the soft copper bar 100 during the mold opening process, prevent the soft copper bar 100 from being deformed by bearing pulling stress, and improve the injection molding quality.

[0042] In order to limit the positions of the front ejector rod 92 and the rear ejector rod 90, in the embodiment, a stepped inner hole 61 is formed in the rear side shovel base 6, a rear end cap 920 is formed at the rear end of the front ejector rod 92, a front end cap 900 is formed at the front end of the rear ejector rod 90, the rear end cap 920 is in abutment with the front end cap 900, the front end cap 900 is in abutment with the step part of the stepped inner hole 61, and the ejector rod spring 91 is clamped between the rear end cap 920 and the slide 3.

[0043] In order to balance the left and right abutment forces, in the embodiment, the front ejector rod 92, the rear ejector rod 90 and the ejector rod spring 91 are two, and the front ejector rod 92 corresponds to the rear ejector rod 90 one by one.

[0044] In the embodiment, the slide 3 is preferably driven to move forward and backward by a shovel base. Specifically, the embodiment comprises a top shovel base 5, the top of the slide 3 is formed with a beveled opening 31, and the inclined surface of the top shovel base 5 is aligned with the inclined surface in the beveled opening 31.

[0045] Correspondingly, two vertically extending avoiding grooves 50 are formed on the top shoveling base 5, and two front top rods 92 respectively pass through the two avoiding grooves 50, and the front top rod 92 and the avoiding groove 50 are movably connected.

[0046] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement or improvement within the technical scope of the present application shall be included in the protection scope of the present application.

Claims

1. A soft copper busbar positioning die based on interchangeable inserts, characterized in that: The mold core comprises a mold core, an interchangeable insert, a slide and a clamping mechanism. The slide is arranged adjacent to the mold core and can move laterally relative to the mold core. The front end of the interchangeable insert extends above the mold core. The rear end of the interchangeable insert is detachably engaged with the slide. The interchangeable insert is provided with a socket. The front end of the clamping mechanism is used to clamp a plurality of soft copper bars arranged side by side. The rear end of the clamping mechanism is inserted into the socket. The clamping mechanism includes a fixed clamping plate and a movable clamping plate, the rear end of the movable clamping plate is hingedly connected to the rear end of the fixed clamping plate, the fixed clamping plate is provided with a plurality of bayonet holes, the bayonet holes correspond one to one with the soft copper busbar, and one end of the soft copper busbar is arranged in the bayonet hole, and the movable clamping plate is folded relative to the fixed clamping plate to restrict one end of the soft copper busbar in the bayonet hole; The rear end of the rear push rod extends toward the rear side of the rear shovel base and abuts and cooperates with the inner wall of the stop block recess, and the push rod spring is used to apply an elastic force to the front push rod and the rear push rod to move backward.

2. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: The socket runs through the front and rear ends of the interchangeable insert, and the rear end of the fixing mechanism is flush with the rear end of the interchangeable insert.

3. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: The movable splint is strip-shaped and includes two hinged arms extending backward. The rear end of the fixed splint is formed with two hinge shafts, which correspond one to one with the hinge arms. The hinge shafts pass through the rear ends of the hinge arms and the two rotate together.

4. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: A positioning convex buckle is formed in the bayonet, and the positioning convex buckle passes through a through hole at one end of the soft copper busbar.

5. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: Two adjacent bayonet ports are connected via a bayonet slot, the depth of the bayonet slot is smaller than the depth of the bayonet port, the movable splint is clamped in the bayonet slot, a plurality of matching slots are provided at the front end of the movable splint, and the matching slots are clamped with the edges of the bayonet slot.

6. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: Two vertically arranged I-shaped slide rails are fixed to the front end of the slide seat, and two vertically extending T-shaped slide grooves are formed at the rear end of the interchangeable insert. The front ends of the two I-shaped slide rails are respectively inserted into the two T-shaped slide grooves, and the I-shaped slide rails slide in cooperation with the T-shaped slide grooves.

7. The soft copper busbar positioning mold based on interchangeable inserts according to claim 1, characterized in that: A thimble accommodating hole is provided at the bottom of the interchangeable insert, and a thimble assembly for limiting the fixed splint is provided in the thimble accommodating hole.

8. The soft copper busbar positioning mold based on interchangeable inserts according to claim 7, characterized in that: The ejector assembly includes an ejector, an ejector spring and a machine screw. An ejector slot is provided at the bottom of the fixed splint. The ejector accommodating hole is aligned with the ejector slot. The machine screw is screwed into the lower end of the ejector accommodating hole. The ejector spring is clamped between the ejector and the machine screw. The upper end of the ejector is engaged with the ejector slot.

9. The soft copper busbar positioning die based on interchangeable inserts according to claim 8, characterized in that: A wedge-shaped end is formed at the upper end of the ejector pin, an ejector slot is formed at the bottom of the fixed splint, the rear end of the ejector slot extends to the rear end edge of the fixed splint, the front end of the ejector slot is adjacent to the ejector slot, and a blocking portion is formed between the front end of the ejector slot and the ejector slot.

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