Unequal-distance core pulling mechanism for copper bar injection molding

Abstract

The utility model belongs to the technical field of copper bar processing, and particularly provides an unequal-distance core-pulling mechanism for copper bar injection molding, which comprises a front mold core-pulling mechanism and a rear mold core-pulling mechanism, the front mold core-pulling mechanism and the rear mold core-pulling mechanism are respectively connected with the upper surface and the lower surface of a copper bar, the rear mold core-pulling mechanism comprises a first core-pulling driving cylinder, a sliding block, an outer core rod and an inner core rod, the sliding block is connected with the first core-pulling driving cylinder, and the inner core rod is arranged in the outer core rod in a sliding manner; a sliding block is arranged in the outer core rod, a sliding strip and a sliding groove with different angles are obliquely arranged in the sliding block, inclined grooves are symmetrically formed in the side face of the bottom of the outer core rod and matched with the sliding strip, and a T-shaped sliding block is connected to the bottom of the inner core rod and arranged in the sliding groove in a sliding mode. The structure is simple, the inner core rod and the outer core rod are used for limiting the copper bar at the same time for one side where no characteristic glue position is required, the moving distances of the inner core rod and the outer core rod are different during core pulling, the upper end faces of the inner core rod and the outer core rod can be flush, and therefore the characteristic glue position cannot be generated.

Description

Technical Field

[0001] This utility model belongs to the field of copper busbar processing technology, and specifically relates to an unequal-distance core-pulling mechanism for copper busbar injection molding. Background Technology

[0002] Copper busbar injection molding is a technology that combines copper busbars with plastic materials through injection molding. This technology has important applications in modern electrical engineering and new energy vehicles. Copper busbar injection molding plays a significant role in improving assembly efficiency, enhancing connection stability, promoting integration and miniaturization, providing insulation protection, improving heat dissipation performance, and enhancing aesthetics and labeling.

[0003] Copper busbars need to be placed in a mold before injection molding. For thinner copper busbars, a mandrel is needed to limit their movement and prevent deformation during injection molding. The mandrel is then removed after injection molding. However, this method leaves protruding feature areas on the top and bottom of the product after the mandrel is removed. Currently, some copper busbar injection molding processes require that the rear mold (bottom) and front mold of the product not have any feature areas. Therefore, the above-mentioned problem is a technical issue that urgently needs to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide an unequal-distance core-pulling mechanism for copper busbar injection molding. Its structure is simple. For the side that requires no feature glue position, the inner core rod and the outer core rod are used to limit the copper busbar at the same time. When pulling the core, the inner core rod and the outer core rod move unequal distances, so that the upper end faces of the inner and outer core rods are flush, thus avoiding the generation of feature glue positions.

[0005] Technical solution: In order to achieve the above objectives, this utility model provides an unequal-distance core-pulling mechanism for copper busbar injection molding, including a front mold core-pulling mechanism and a rear mold core-pulling mechanism.

[0006] The front mold core pulling mechanism and the rear mold core pulling mechanism are respectively connected to the top and bottom of the copper busbar. The rear mold core pulling mechanism includes a first core pulling drive cylinder, a slider, an outer core rod and an inner core rod. The slider is connected to the first core pulling drive cylinder, and the inner core rod is slidably disposed in the outer core rod.

[0007] The slider is inclined with sliders and grooves at different angles. The bottom side of the outer core rod is symmetrically provided with inclined grooves, which cooperate with the sliders. The bottom of the inner core rod is connected to a T-shaped slider, which slides in the groove.

[0008] The front mold core-pulling mechanism and the rear mold core-pulling mechanism are used to position the copper busbars and prevent them from deforming due to impact during injection molding. During injection molding, the tops of the outer and inner core rods on the rear mold position the copper busbars. At the end of injection molding, the first core-pulling drive cylinder drives the slider to move. Due to the different inclination angles of the slide bars and grooves inside the slider, the outer and inner core rods move downwards by different distances, thus achieving unequal-distance core pulling.

[0009] Furthermore, the outer core rod has a set of rectangular through holes, and a set of inner core rods are disposed in these rectangular through holes. A baffle is provided on the upper end face of the outer core rod, and the inner core rods are located between the baffles. The upper end face of the inner core rods and the baffles form a set of grooves. The inner core rods are disposed in the rectangular through holes on the outer core rod, and the two can slide relative to each other. The groove formed by the baffle at the top of the outer core rod and the top end face of the inner core rod can precisely engage with the copper busbar.

[0010] Furthermore, the tilt angle of the slider is greater than the tilt angle of the groove, and there are three sets of sliders and grooves. The greater tilt angle of the slider and the same horizontal displacement of the slider result in the outer core rod having a longer downward stroke than the inner core rod.

[0011] Furthermore, it also includes a guide block and a guide limiting block. The guide block is located above the slider and is sleeved on the outer core rod. The guide limiting blocks are located on both sides of the slider. The guide block plays a guiding role during the movement of the outer core rod, and the guide limiting blocks play a guiding and limiting role during the movement of the slider.

[0012] Furthermore, the upper end face of the baffle is chamfered. The chamfering process can prevent damage to the copper busbar during the insertion of the baffle and the copper busbar, and at the same time, it can play a certain guiding role, making it easier for the copper busbar to be inserted between the two baffles.

[0013] Furthermore, the front mold core-pulling mechanism includes a second core-pulling drive cylinder, a core rod, a shovel base block, and a second slider. The core rod is located at the lower part of the second slider, and the second slider is slidably mounted on the shovel base block. The shovel base block is connected to the second core-pulling drive cylinder.

[0014] Furthermore, the bottom of the core rod is provided with a rectangular groove, which is used to limit the top of the copper busbar. A set of sliding platforms are obliquely arranged on both sides of the shovel base block, and the second slider is provided with oblique sliding grooves that cooperate with the sliding platforms. The second core-pulling drive cylinder drives the shovel base block to move horizontally. The sliding platforms on the shovel base block cooperate with the oblique sliding grooves on the second slider to convert the horizontal displacement into an upward displacement of the second slider, thereby moving the core rod upwards.

[0015] As can be seen from the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0016] This utility model provides an unequal-distance core-pulling mechanism for copper busbar injection molding. Its structure is simple and rationally designed. Near the end of the injection molding process, the rear mold core-pulling mechanism activates. The first core-pulling drive cylinder drives the slider to move horizontally, thereby causing the outer and inner core rods to move downwards and detach from the copper busbar. When the upper end face of the baffle plate is flush with the upper end face of the inner core rod, the material injected by the injection molding machine fills the gap created by the core-pulling. After injection molding, the front mold core-pulling mechanism removes the core rods, and the rear mold core-pulling mechanism continues to operate, completely removing the outer and inner core rods, leaving no characteristic glue marks on the bottom surface of the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the unequal-distance core-pulling mechanism for copper busbar injection molding according to the present invention.

[0018] Figure 2 This is a schematic diagram of the slider described in this utility model;

[0019] Figure 3 This is a schematic diagram of the outer core rod and inner core rod of the present invention;

[0020] Figure 4 for Figure 3 Enlarged view on the left;

[0021] Figure 5 This is a schematic diagram of the front mold core-pulling mechanism described in this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the second slider and core rod described in this utility model.

[0023] In the diagram: 11-First core-pulling drive cylinder, 12-Slider, 121-Slider bar, 122-Slide groove, 13-Outer core rod, 131-Inclined groove, 132-Baffle, 14-Inner core rod, 141-T-shaped slider, 15-Guide block, 16-Guide limiting block, 21-Second core-pulling drive cylinder, 22-Core rod, 23-Shovel base block, 231-Slide table, 24-Second slider, 241-Inclined slide groove. Detailed Implementation

[0024] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] like Figure 1-6 As shown: An unequal-distance core-pulling mechanism for copper busbar injection molding, including a front mold core-pulling mechanism and a rear mold core-pulling mechanism;

[0026] The front mold core pulling mechanism and the rear mold core pulling mechanism are respectively connected to the top and bottom of the copper busbar. The rear mold core pulling mechanism includes a first core pulling drive cylinder 11, a slider 12, an outer core rod 13 and an inner core rod 14. The slider 12 is connected to the first core pulling drive cylinder 11, and the inner core rod 14 is slidably disposed in the outer core rod 13.

[0027] The slider 12 is inclined with sliders 121 and grooves 122 at different angles. The bottom side of the outer core rod 13 is symmetrically provided with inclined grooves 131, which cooperate with the sliders 121. The bottom of the inner core rod 14 is connected to a T-shaped slider 141, which slides in the groove 122.

[0028] This embodiment provides an unequal-distance core-pulling mechanism for copper busbar injection molding. During injection molding, the front mold core-pulling mechanism and the rear mold core-pulling mechanism limit the copper busbar. Core pulling begins at the end of the injection molding process. The outer core rod 13 and the inner core rod 14 on the rear mold core-pulling mechanism move downwards by different distances. As the first core-pulling drive cylinder drives the slider 12 to move, the upper surfaces of the outer core rod 13 and the inner core rod 14 become flush. Then, the injection molding fills the gaps at the ends of the outer core rod 13 and the inner core rod 14, thus achieving unequal-distance core pulling and avoiding leaving feature glue positions on the rear mold of the product.

[0029] In particular, such as Figure 3 and Figure 4 As shown, the outer core rod 13 has a set of rectangular through holes, and a set of inner core rods 14 are disposed in the rectangular through holes. A baffle 132 is provided on the upper end face of the outer core rod 13, and the inner core rods 14 are located between the baffles 132. The upper end face of the inner core rod 14 and the baffles 132 form a set of grooves. During injection molding, the lower part of the copper busbar is located in the groove formed by the upper end face and the baffles 132, and the upper end face of the inner core rod 14 contacts the lower end face of the copper busbar.

[0030] The slider 121 has a greater inclination angle than the groove 122, and there are three sets of sliders 121 and grooves 122. Because the slider 121 has a greater inclination angle than the groove 122, when the slider 12 moves, the outer core rod 13 will move a longer distance than the inner core rod 14, allowing the upper surface of the baffle 132 to be flush with the upper surface of the inner core rod 14. The number of sliders 121 and grooves 122 is not limited and is consistent with the number of outer core rods 13 and inner core rods 14. The specific number can be determined based on parameters such as the length and thickness of the copper busbar.

[0031] like Figure 1 As shown, it also includes a guide block 15 and a guide limiting block 16. The guide block 15 is located above the slider 12 and is sleeved on the outer core rod 13. The guide limiting block 16 is located on both sides of the slider 12.

[0032] Specifically, the upper end face of the baffle 132 is chamfered.

[0033] like Figure 1 , Figure 5 As shown, the front mold core pulling mechanism includes a second core pulling drive cylinder 21, a core rod 22, a shovel base block 23, and a second slider 24. The core rod 22 is located at the lower part of the second slider 24, and the second slider 24 is slidably mounted on the shovel base block 23. The shovel base block 23 is connected to the second core pulling drive cylinder 21.

[0034] like Figure 6 As shown, the bottom of the core rod 22 is provided with a rectangular groove, and a set of sliding tables 231 are obliquely provided on both sides of the shovel base block 23. The second slider 24 is provided with an oblique sliding groove 241 that cooperates with the sliding table 231.

[0035] The working principle of the unequal-distance core-pulling mechanism for copper busbar injection molding provided by this utility model is as follows:

[0036] First, the copper busbar is placed into the injection mold. The core rods 22, 13, and 14 on the front and rear mold core-pulling mechanisms respectively limit the upper and lower surfaces of the copper busbar. Then, the mold is closed and injection begins. Near the end of the injection process, for example, when it reaches 95%, the rear mold core-pulling mechanism activates. The first core-pulling drive cylinder 11 drives the slider 12 to move horizontally, thereby causing the outer core rod 13 and inner core rod 14 to move downwards and detach from the copper busbar. When the upper surface of the baffle 132 is flush with the upper surface of the inner core rod 14, the material injected by the injection molding machine fills the gap created by the core-pulling. After injection, the front mold core-pulling mechanism removes the core rod 22, and the rear mold core-pulling mechanism continues to remove the outer core rod 13 and inner core rod 14 completely. This unequal-distance core-pulling ensures that the rear mold of the product does not leave any feature glue area, while the front mold does. If both the front and rear molds have a requirement that no feature glue areas be left, simply replace the front mold core-pulling mechanism with the rear mold core-pulling mechanism.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A non-equidistant core-pulling mechanism for copper busbar injection molding, characterized in that, Includes a front mold core-pulling mechanism and a rear mold core-pulling mechanism; The front mold core pulling mechanism and the rear mold core pulling mechanism are respectively connected to the top and bottom of the copper busbar. The rear mold core pulling mechanism includes a first core pulling drive cylinder (11), a slider (12), an outer core rod (13) and an inner core rod (14). The slider (12) is connected to the first core pulling drive cylinder (11), and the inner core rod (14) is slidably disposed in the outer core rod (13). The slider (12) is inclined with sliders (121) and grooves (122) at different angles. The bottom side of the outer core rod (13) is symmetrically provided with inclined grooves (131). The inclined grooves (131) cooperate with the sliders (121). The bottom of the inner core rod (14) is connected to a T-shaped slider (141). The T-shaped slider (141) is slidably disposed in the groove (122).

2. The unequal-distance core-pulling mechanism for copper busbar injection molding according to claim 1, characterized in that, The outer core rod (13) is provided with a set of rectangular through holes, and a set of inner core rods (14) are provided in the rectangular through holes. The upper end face of the outer core rod (13) is provided with baffles (132), and the inner core rods (14) are located between the baffles (132). The upper end face of the inner core rod (14) and the baffles (132) form a set of grooves.

3. The unequal-distance core-pulling mechanism for copper busbar injection molding according to claim 1, characterized in that, The tilt angle of the slider (121) is greater than the tilt angle of the groove (122), and there are three sets of sliders (121) and grooves (122).

4. The unequal-distance core-pulling mechanism for copper busbar injection molding according to claim 1, characterized in that, It also includes a guide block (15) and a guide limiting block (16). The guide block (15) is located above the slider (12) and is sleeved on the outer core rod (13). The guide limiting block (16) is located on both sides of the slider (12).

5. A non-equidistant core-pulling mechanism for copper busbar injection molding according to claim 2, characterized in that, The upper end face of the baffle (132) is chamfered.

6. The unequal-distance core-pulling mechanism for copper busbar injection molding according to claim 1, characterized in that, The front mold core pulling mechanism includes a second core pulling drive cylinder (21), a core rod (22), a shovel base block (23), and a second slider (24). The core rod (22) is located at the lower part of the second slider (24), and the second slider (24) is slidably located on the shovel base block (23). The shovel base block (23) is connected to the second core pulling drive cylinder (21).

7. The unequal-distance core-pulling mechanism for copper busbar injection molding according to claim 6, characterized in that, The bottom of the core rod (22) is provided with a rectangular groove, and a set of slides (231) are provided on both sides of the shovel base block (23). The second slider (24) is provided with an oblique slide groove (241) that cooperates with the slides (231).

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