A mold structure for side-pulling core forming of a slider to prevent damage to metal brass busbars.

Abstract

This utility model belongs to the field of mold technology and discloses a mold structure for side-pulling core forming of a slider to prevent damage to the metal copper busbar. The upper mold part includes an upper mold fixing insert and an upper mold guide pin. The lower mold part includes a lower mold core and a hydraulic cylinder assembly. The lower mold part also includes a side-pulling slider, which includes a slider insert A, a slider insert B, a slider floating block, a slider insert C, and a slider seat. Slider insert A is located at the end of the side-pulling slider, and slider insert B is located above slider insert C. The two are located in the middle section of the side-pulling slider. The slider floating block is vertically movable between slider insert B and slider insert C. The slider seat is located at the tail end of the side-pulling slider and is connected to the hydraulic cylinder assembly. The exposed end of the metal copper busbar passes through slider insert A to the top of the slider floating block. The upward push of the slider floating block is flush with the top of slider insert C. When the mold is closed, the upper mold guide pin is inserted and guided and locked into the upper mold fixing insert.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a mold structure for side-pulling core forming of a slider to prevent damage to metal copper busbars. Background Technology

[0002] In injection molding, core pulling is a mechanism or technique used to handle lateral convex and concave structures, solving the problem of difficult demolding due to overly complex internal shapes. It is mainly used in injection molding, stamping, and other processes to ensure the smooth demolding of complex-shaped products. Therefore, the design and operation of core pulling structures require certain technical skills and experience. If the core pulling design is unreasonable or the operation is improper, it is very likely to damage the surface of the part or affect the product quality.

[0003] like Figure 1 , 2 As shown, the metal busbar to be processed and its final injection-molded electrical plastic product are shown. The core-pulling distance of the metal busbar is 111.5mm. Conventional slider-side core-pulling can easily scratch the surface of the metal busbar. In addition, due to the complex structure of the metal busbar itself, it cannot be accurately placed in the side core-pulling direction. As a result, the core-pulling slider of the metal busbar can easily collide with the metal busbar during the reset process, thereby damaging the metal busbar and the mold and causing normal production failure.

[0004] Therefore, there is an urgent need for a lateral core-pulling mold structure that can prevent damage to the copper busbars of metal parts. During the core-pulling process, it can accurately position the parts without damaging their surfaces, thus reducing the defect rate. Utility Model Content

[0005] To address the problems of poor mold structure reliability and low production efficiency in the existing technology, this utility model provides a side-pulling mold structure for preventing damage to metal busbars. This mold structure is easy to operate, simple to manufacture, and safe and reliable. It effectively avoids damage to the product during the injection molding process of encapsulating metal busbars, ensures the precise positioning of the metal busbars in the mold, eliminates frequent mold damage caused by pressing, and improves production efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: A mold structure for side-pulling core forming of a slider to prevent damage to metal busbars is disclosed. The upper mold part includes an upper mold fixing insert and an upper mold guide pin. The lower mold part includes a lower mold core and a hydraulic cylinder assembly. The lower mold part also includes a side-pulling slider, which includes slider insert A, slider insert B, slider floating block, slider insert C, and slider seat. Slider insert A is located at the end of the side-pulling slider, slider insert B is located above slider insert C, and both are located in the middle section of the side-pulling slider. The slider floating block is vertically movable between slider insert B and slider insert C. The slider seat is located at the tail end of the side-pulling slider and is connected to the hydraulic cylinder assembly. The metal busbar is placed in the lower mold core, and its exposed end passes through slider insert A to the top of slider floating block. Under the pushing force of the rising slider floating block, it is flush with the top of slider insert C. During mold closing, the metal busbar is inserted and guided by the upper mold guide pin and locked into the upper mold fixing insert.

[0007] Furthermore, the bottom of the slider floating block is provided with a floating block inclined surface, and the lower mold core is provided with a guide sliding inclined surface that matches the floating block inclined surface. During the process of the oil cylinder assembly pushing the lateral core-pulling slider to close with the lower mold core, the guide sliding inclined surface pushes the slider floating block to move vertically upward through the floating block inclined surface.

[0008] Furthermore, the lateral core-pulling slider also includes a spring, the slider insert C is provided with a slider float block mounting hole, the slider float block is provided with protruding limiting brackets on both sides, the upper end face of the limiting brackets is provided with springs respectively, the slider insert B is provided with spring holes at corresponding positions of the limiting brackets, and the slider insert C is provided with limiting bracket grooves on both sides of the slider float block mounting hole that are adapted to the limiting brackets.

[0009] Furthermore, the depth of the limiting mounting groove is greater than the thickness of the limiting mounting.

[0010] Furthermore, the metal busbar is provided with multiple positioning round holes and threaded holes, and the lower mold core is provided with round hole positioning pins that match the positioning round holes and threaded hole positioning pins that match the threaded holes.

[0011] Furthermore, the top of the slider insert B is provided with a clearance hole to facilitate the passage of the upper mold guide pin, and the slider floating block is provided with a positioning hole for positioning the upper mold guide pin.

[0012] Furthermore, the lower mold portion also includes a lower template, and the cylinder assembly includes a cylinder fixing block and a hydraulic cylinder. The lower template is provided with a slider guide rail, and the cylinder fixing block is installed at the tail end of the slider guide rail. The tail end of the slider seat is provided with a cylinder mounting groove, and guide slides adapted to the slider guide rail are provided on both sides. The push rod of the hydraulic cylinder is installed in the cylinder mounting groove and fixed to the cylinder fixing block with screws, thereby realizing the connection between the lateral core-pulling slider and the cylinder assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a mold structure for side-pulling core forming of a slider to prevent damage to the copper busbar. It solves the problems of conventional slider side-pulling which easily scratches the surface of the copper busbar; the inability to accurately place the copper busbar in the side-pulling direction; and the fact that the slider can easily collide with the copper busbar during the resetting process, thus damaging the copper busbar and the mold and causing production disruptions. At the same time, it improves the dimensional accuracy of the product and makes it possible to achieve automated production solutions when combined with other tooling equipment, bringing huge economic benefits to enterprises. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the copper busbar to be processed according to this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the injection-molded product after processing according to this utility model.

[0016] Figure 3 This is a cross-sectional view of the mold structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the upper mold part of this utility model.

[0018] Figure 5 This is a schematic diagram of the lower mold part of this utility model.

[0019] Figure 6 This is an exploded view of the lateral core-pulling slider of this utility model.

[0020] Figure 7 This is a schematic diagram of the structure of the side core-pulling slider and the hydraulic cylinder assembly of this utility model.

[0021] The components include: 1. Copper busbar for hardware; 1-1. Positioning round hole; 1-2. Positioning threaded hole; 2. Injection molded product; 3. Upper mold plate; 4. Upper mold core; 5. Upper mold fixing insert; 6. Upper mold guide pin; 7. Hydraulic cylinder; 8. Lower mold core; 9. Lower mold plate; 10. Slider insert A; 11. Slider insert B; 12. Slider floating block; 13. Slider insert C; 14. Slider seat; 15. Spring; 16. Slider guide rail; 17. Cylinder fixing block.

[0022] The specific embodiments of this utility model will be further explained below with reference to the accompanying drawings.

[0023] like Figures 1-2 As shown, these are the copper busbar 1 to be processed and the injection-molded product 2 after processing, respectively. Figure 2 As shown, the side groove at one end of the exposed copper busbar of injection molded product 2 is the part that needs to be side-core pulled.

[0024] To facilitate the positioning of the copper busbar 1 in the mold, multiple positioning holes 1-1 for positioning processing are provided on the copper busbar 1. Combined with multiple threaded holes 1-2 required for actual use in the final product, positioning can be achieved. The threaded holes 1-2 include insert mounting holes and threaded inserts. The threaded insert has a structure with one threaded opening and one closed end. After the open end is riveted to the threaded mounting hole, a complete threaded hole 1-2 is formed.

[0025] Due to the relatively complex structure of the metal busbar 1, its positioning in the mold structure needs to take into account its positioning in the lower mold core 8, its positioning in the side core-pulling slider, and its positioning in the upper mold fixing insert 5.

[0026] This embodiment uses a metal busbar with a thickness of approximately 2mm and threaded holes 1-2 with a depth of approximately 16mm for specific illustration.

[0027] like Figures 3-7 As shown, this is a mold structure for side-pulling core forming of a slider to prevent damage to the copper busbar of a metal device, including an upper mold part and a lower mold part.

[0028] The upper mold part includes an upper template 3, an upper mold core 4, an upper mold fixing insert 5, and an upper mold guide pin 6. The upper mold core 4 is disposed inside the upper template 3, the upper mold fixing insert 5 is disposed on the upper mold core 4, and the upper mold guide pin 6 is disposed on the upper mold fixing insert 5. The upper mold fixing insert 5 is provided with a fixing groove for the exposed end of the metal busbar 1. The position of the upper mold guide pin 6 corresponds to the position of the positioning round hole 1-1 on the metal busbar 1. When the mold is closed, it is inserted to play a guiding role, so that the exposed end of the metal busbar 1 can smoothly enter the fixing groove of the upper mold fixing insert 5.

[0029] The lower mold portion includes a lower mold core 8, a lower template 9, a lateral core-pulling slider, and a hydraulic cylinder assembly. The lower mold core 8 is disposed in the lower template 9. The lateral core-pulling slider includes a slider insert A10, a slider insert B11, a spring 15, a slider floating block 12, a slider insert C13, and a slider seat 14. The hydraulic cylinder assembly includes a hydraulic cylinder fixing block 17 and a hydraulic cylinder 7. The hydraulic cylinder assembly pushes the lateral core-pulling slider to slide laterally in the lower mold portion.

[0030] The slider insert A10 is located at the end of the lateral core-pulling slider, and its internal molding part is entirely made of glue. The slider insert B11 is located above the slider insert C13 and in the middle position of the lateral core-pulling slider. The slider floating block 12 is vertically movable between the slider insert B11 and the slider insert C13. The slider seat 14 is located at the tail end of the lateral core-pulling slider.

[0031] The positioning of slider inserts A10, B11, C13, and slide block 14 is achieved through mutually compatible positioning grooves and positioning bosses. Specifically, slider inserts B11 and C13 are positioned by side positioning bosses and side positioning grooves that are compatible on both sides, and then locked by hexagonal screws. Slider inserts B11 and C13 have positioning grooves at their front and rear ends, respectively. Slider insert A10 has a positioning boss at its tail end, which is compatible with the positioning grooves at the front ends of slider inserts B11 and C13. Slider block 14 also has a positioning boss at its front end, which is compatible with the positioning grooves at the front ends of slider inserts B11 and C13. After assembly, the slider is locked by hexagonal screws to complete the assembly of the lateral core-pulling slider.

[0032] The lower template 9 is provided with a slider guide rail 16, and a cylinder fixing block 17 is installed at the tail end of the slider guide rail 16. The tail end of the slider seat 14 is provided with a cylinder mounting groove, and guide slides adapted to the slider guide rail 16 are provided on both sides. The push rod of the hydraulic cylinder 7 is installed in the cylinder mounting groove and fixed to the cylinder fixing block 17 by screws, thereby realizing the connection between the lateral core-pulling slider and the cylinder assembly.

[0033] The slider insert C13 is provided with a slider floating block mounting hole. The slider floating block 12 is vertically movable and is installed in the slider floating block mounting hole. The slider floating block 12 has protruding limiting platforms on both sides. The upper end surface of the limiting platform is provided with a spring 15. The slider floating block mounting hole has limiting platform grooves on both sides that are adapted to the limiting platforms. The depth of the limiting platform groove is greater than the thickness of the limiting platform, preferably greater than 3mm. The slider insert B11 has a spring hole corresponding to the position of the limiting platform to accommodate the spring 15. The slider floating block 12 compresses the spring 15 during the upward movement.

[0034] The bottom of the slider floating block 12 is provided with a floating block inclined surface, and when the mold is not closed, its initial state protrudes from the bottom surface of the slider insert C13. Correspondingly, the lower mold core 8 is provided with a guide sliding inclined surface that matches the floating block inclined surface. During the process of the hydraulic cylinder assembly pushing the lateral core-pulling slider and the lower mold core 8 to close the mold, the guide sliding inclined surface of the lower mold core 8 and the floating block inclined surface of the slider floating block 12 rub against each other and push the slider floating block 12 to move vertically upward, compressing the spring 15. The main function of the spring 15 is to push the slider floating block 12 to reset when the mold is opened.

[0035] The exposed end of the metal busbar 1 passes through the interior of the slider insert A10 to the top of the slider float block 12, and must be flush with the top of the slider insert C13, and finally be inserted into the upper mold core 4 to complete its positioning requirements.

[0036] The metal busbar 1 is placed inside the lower mold core 8 of the lower mold part. The lower mold core 8 is provided with a round hole positioning post, a threaded hole positioning post, and a lower mold core positioning slot. The round hole positioning post is used to position the positioning round hole 1-1 on the metal busbar 1, the threaded hole positioning post is used to position the threaded hole 1-2 on the metal busbar 1, and the lower mold core positioning slot is used to position the bending point in the middle of the metal busbar 1. According to the thickness of the metal busbar and the depth of the threaded hole, the length of the round hole positioning post is 3mm, the length of the threaded hole positioning post is 8mm, and both of them have a chamfered C-angle at the head.

[0037] Because of the fit tolerance between the threaded insert and the bolt, and the relatively large machining tolerance of the insert mounting holes on the brass busbar 1, the fit tolerance between the threaded locating post and the threaded hole 1-2 is also relatively large. Therefore, the fit between the threaded hole 1-2 and the side wall of the threaded locating post actually serves a coarse positioning and guiding function. Compared to the coarse positioning of the threaded hole 1-2, the machining tolerance of the diameter of the locating hole 1-1 of the brass busbar 1 can be controlled within ±0.02mm, allowing for relatively precise positioning.

[0038] With the mold structure in the open state, the metal busbar 1 is placed in the lower mold core 8. Because the height of the threaded hole locating post is greater than that of the small round hole locating post, firstly, the threaded hole 1-2 aligns with the threaded hole locating post. Secondly, the locating round hole 1-1 on the metal busbar 1 aligns with the round hole locating post on the lower mold core 8. Then, the bent part in the middle of the metal busbar 1 is engaged in the locating slot of the lower mold core until the overlapping surface of the metal busbar is completely in contact with the surface of the lower mold core 8, thereby achieving the positioning of the metal busbar 1 in the lower mold core 8. For the upper mold part, during the mold closing process, the upper mold guide pin 6 is inserted into the locating round hole of the metal busbar during its descent, and the guide copper busbar is engaged in the copper busbar groove on the upper mold fixing insert, completing the positioning of the metal busbar.

[0039] After the metal busbar 1 is positioned in the lower mold core 8, since the final product still requires long-distance core pulling, the exposed end of the metal busbar 1 needs to be inserted into the side core pulling slider. That is, after the exposed end of the metal busbar 1 passes through the slider insert A10, it reaches the top of the slider lifting block 12. During the process of the hydraulic cylinder pushing the entire side core pulling slider to the mold closing position, the guide slope of the lower mold core 8, together with the lifting block slope of the slider lifting block 12, pushes the slider lifting block 12 to move vertically upward. During the upward process, the slider lifting block 12 contacts the metal busbar 1 and lifts the metal busbar 1 to move upward synchronously until the surface of the metal busbar 1 is flush with the surface of the slider insert C13. During this process, the entire side core pulling slider moves forward continuously and finally reaches the mold closing position. The metal busbar 1 finally reaches the predetermined position in the side core pulling slider along the surface of the slider insert C13, completing the initial positioning in the side core pulling slider.

[0040] At this point, the injection molding machine is started. The machine platform slowly lowers the upper mold part, initiating the mold closing action. The upper mold guide pin 6 is inserted into the corresponding positioning hole 1-1 of the metal busbar 1 through the clearance hole of the slider insert B11, guiding the position of the metal busbar 1 so that it is engaged in the fixing groove of the upper mold fixing insert 5. The upper mold guide pin 6 is finally inserted into the positioning hole on the slider floating block 12. The upper mold fixing insert 5 and the slider insert C13 are closed, and the parting surfaces of the upper mold core 4 and the lower mold core 8 are engaged. This completes the final positioning of the entire metal busbar 1 in the mold cavity, and the entire mold set forms a complete cavity. The mold closing action is then completed. After the mold is closed, an appropriate amount of plastic material is injected into the sealed cavity, and the injection molded product 2 is formed.

[0041] The mold opening process is as follows: Driven by the injection molding machine, the upper mold core 4 and the lower mold core 8 open. After the upper mold part reaches the set mold opening height, it stops rising. The hydraulic cylinder 7 starts and pulls the entire side core-pulling slider backward. The exposed end of the metal copper busbar 1 is pulled out from the slider insert B11, slider insert C13 and slider insert A10. Finally, the injection molded product 2 is ejected from the cavity. Thus, the mold completes one molding cycle.

[0042] In this embodiment, when one end of the metal busbar is exposed, the metal busbar is precisely positioned by the cooperation of the upper mold fixing insert, upper mold guide pin, slider insert A, slider insert B, slider insert C, slider floating block and lower mold core. Finally, the upper mold core and lower mold core form a closed cavity for injection molding, and finally form an injection molded product with plastic material covering the metal busbar that meets the production requirements.

[0043] By precisely positioning the copper busbar 1 in the mold structure, damage to the copper busbar and surface scratches in the mold are effectively avoided, significantly improving the yield rate. The operation is convenient and greatly improves production efficiency, making it suitable for widespread application.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold structure for side-pulling core forming of a slider to prevent damage to metal brass busbars, wherein the upper mold part includes an upper mold fixing insert (5) and an upper mold guide pin (6), and the lower mold part includes a lower mold core (8) and a hydraulic cylinder assembly, characterized in that, The lower mold portion also includes a side core-pulling slider, which includes a slider insert A (10), a slider insert B (11), a slider float block (12), a slider insert C (13), and a slider seat (14). The slider insert A (10) is located at the end of the side core-pulling slider, and the slider insert B (11) is located above the slider insert C (13). Both are located in the middle section of the side core-pulling slider. The slider float block (12) is vertically movable and positioned on the slider insert B (13). 1) Between the slider insert C (13), the slider seat (14) is located at the tail end of the side core-pulling slider and connected to the oil cylinder assembly. The metal busbar (1) is placed in the lower mold core (8). Its exposed end passes through the slider insert A (10) to the top of the slider floating block (12). Under the push of the slider floating block (12) rising, it is flush with the top of the slider insert C (13). When the mold is closed, the metal busbar (1) is inserted into the upper mold guide pin (6) for guidance and is stuck in the upper mold fixing insert (5).

2. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 1, wherein The bottom of the slider floating block (12) is provided with a floating block inclined surface, and the lower mold core (8) is provided with a guide sliding inclined surface that matches the floating block inclined surface. During the process of the oil cylinder assembly pushing the lateral core-pulling slider to close the mold with the lower mold core (8), the guide sliding inclined surface pushes the slider floating block (12) to move vertically upward through the floating block inclined surface.

3. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 1, wherein The lateral core-pulling slider also includes a spring (15). The slider insert C (13) is provided with a slider float block mounting hole. The slider float block (12) is provided with protruding limiting brackets on both sides. The upper end face of the limiting bracket is provided with a spring (15). The slider insert B (11) is provided with a spring hole at the corresponding position of the limiting bracket. The slider insert C (13) is provided with limiting bracket grooves that are adapted to the limiting brackets on both sides of the slider float block mounting hole.

4. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 3, wherein The depth of the limiting mounting groove is greater than the thickness of the limiting mounting.

5. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 1, wherein The metal busbar (1) is provided with multiple positioning round holes (1-1) and threaded holes (1-2), and the lower mold core (8) is provided with round hole positioning pins that are compatible with the positioning round holes (1-1) and threaded hole positioning pins that are compatible with the threaded holes (1-2).

6. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 1, wherein The top of the slider insert B (11) is provided with a clearance hole to facilitate the passage of the upper mold guide pin (6), and the slider float block (12) is provided with a positioning hole for positioning the upper mold guide pin (6).

7. A mold structure for side core pulling of a slider for preventing pressure injury of a brass rod according to claim 1, wherein The lower mold part also includes a lower template (9), the cylinder assembly includes a cylinder fixing block (17) and a hydraulic cylinder (7), the lower template (9) is provided with a slider guide rail (16), the tail end of the slider guide rail (16) is installed with a cylinder fixing block (17), the tail end of the slider seat (14) is provided with a cylinder mounting groove, and the two sides are provided with guide slides adapted to the slider guide rail (16). The push rod of the hydraulic cylinder (7) is installed in the cylinder mounting groove and fixed to the cylinder fixing block (17) by screws, thereby realizing the connection between the lateral core-pulling slider and the cylinder assembly.

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