Pedal bracket injection mold and automatic production line

Abstract

The utility model relates to a kind of pedal support injection mould and automatic production line.It solves the technical problem of unreasonable design of existing injection mould.The pedal support injection mould of this includes: vertically spaced upper die holder and lower die holder, the upper end both sides of lower die holder horizontal sliding connection at least one side die holder, the upper die holder is equipped with the drive part on side die holder and drive the side die holder sliding, product injection cavity is equipped between the upper die holder, lower die holder and side die holder;Side material removal structure, including the limiting post being set in the inner wall of side die holder along the sliding direction of side die holder, sliding sleeve is connected on the limiting post and the end away from limiting post can abut on the inner wall of lower die holder, the material removal sleeve and the end away from limiting post are inserted into product injection cavity and circumferential outer wall is equipped with abutting step.The pedal support injection mould of this makes that overall stress is uniform during material removal process, not easy to pull damage, and avoid the problem of difficult material removal.

Description

Technical Field

[0001] This utility model belongs to the field of injection molds and relates to an injection mold for a pedal bracket and an automatic production line. Background Technology

[0002] For example, Chinese patent literature discloses an injection mold for a pedal bracket [201922347334.7], which includes a front mold, a rear mold, and a slider. The front mold has a first parting surface, including a first horizontal surface A, a first horizontal surface B, and a first inclined surface. The slider is located on the upper end surface of the rear mold and partially protrudes relative to the inner wall of the rear mold. The slider has a second parting surface, including a second horizontal surface A, a second horizontal surface B, and a second inclined surface. The first horizontal surface A and the second horizontal surface A cooperate, the first horizontal surface B and the second horizontal surface B cooperate, and the first inclined surface and the second inclined surface cooperate to drive the slider to move inward.

[0003] The drawbacks of the above technical solution are: the pedal bracket has a through hole structure, which will cause uneven stress on the product during demolding and make it easy to be damaged. Moreover, the overall structure of the pedal bracket is relatively complex, and it is easy to be attracted by negative pressure when demolding narrow and deep complex surfaces, making it difficult to remove the product. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a pedal bracket injection mold and an automated production line.

[0005] The objective of this utility model can be achieved through the following technical solutions: The pedal bracket injection mold includes: An upper mold base and a lower mold base are vertically spaced apart. At least one side mold base is horizontally slidably connected to the upper two sides of the lower mold base. The upper mold base is provided with a driving part that acts on the side mold base and drives the side mold base to slide. A product injection cavity is provided between the upper mold base, the lower mold base and the side mold base. The lateral stripping structure includes a limiting post disposed on the inner wall of the side mold base along the sliding direction of the side mold base, a stripping sleeve slidably sleeved on the limiting post and whose end away from the limiting post can abut against the inner wall of the lower mold base, and the stripping sleeve whose end away from the limiting post extends into the product injection cavity and has an abutment step on its circumferential outer wall.

[0006] Furthermore, the end face of the abutting step is flush with the end face of the side mold base.

[0007] Furthermore, the side mold base is provided with an inclined guide hole, and the driving part is an inclined rod disposed at the bottom of the upper mold base and correspondingly inserted into the inclined guide hole.

[0008] Furthermore, the upper end of the side mold base is provided with an abutting inclined surface, and the bottom of the upper mold base is provided with a downward pressing cavity wall acting on the abutting inclined surface.

[0009] Furthermore, a lifting plate is connected to the lower mold base for lifting, and lifting columns that can extend into the bottom of the product injection cavity are provided at intervals on the upper end of the lifting plate.

[0010] Furthermore, the lower mold base is also provided with a pre-ejector post that is inclined to penetrate the bottom of the product injection cavity, and the lower mold base is also provided with a wedge block that acts on the end of the pre-ejector post away from the product injection cavity, and a driver for driving the wedge block.

[0011] Furthermore, the lower mold base is also provided with a limiting step to prevent the pre-ejector from extending too far in.

[0012] Furthermore, the inner wall of the side mold base is also provided with forming protrusions that are spaced out along the sliding direction of the side mold base.

[0013] Furthermore, a lifting guide hole is provided between the upper mold base and the lower mold base, and the upper mold base is provided with a lifting guide column that slides along the lifting guide hole.

[0014] This utility model also provides an automated production line having the pedal bracket injection mold as described above.

[0015] Compared with existing technologies, this pedal bracket injection mold adopts a two-stage side stripping method, which separates the stripping of the product's side outer wall from the stripping of the product's through hole. This makes the overall force uniform during the stripping process, making it less prone to tearing damage. In addition, when the mold is opened for stripping, the pre-ejector is pre-detached from contact with the outer wall of the product, avoiding the problem of negative pressure adsorption between the lower mold base and the complex outer wall of the product, which would make stripping difficult. Attached Figure Description

[0016] Figure 1 A schematic diagram of an injection mold and automated production line for a pedal bracket provided by this utility model.

[0017] Figure 2 for Figure 1 A schematic diagram of the lateral stripping structure of the pedal bracket injection mold.

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A of the injection mold for the pedal bracket.

[0019] Figure 4 for Figure 1 A schematic diagram of the pre-ejector column in the injection mold of the pedal bracket.

[0020] Figure 5 for Figure 1 A schematic diagram of the lifting column in the injection mold of the pedal bracket.

[0021] Figure 6 for Figure 1A schematic diagram of the lifting guide column of the pedal bracket injection mold.

[0022] Figure 7 for Figure 1 A schematic diagram of the injection molded product of the pedal bracket injection mold.

[0023] In the diagram, 10 is the upper mold base; 11 is the product injection cavity; 12 is the drive unit; 13 is the inclined rod; 14 is the lower pressure cavity wall; 15 is the lifting guide hole; 16 is the lifting guide column; 20 is the lower mold base; 21 is the inclined guide hole; 22 is the abutting inclined surface; 30 is the side mold base; 31 is the molding protrusion; 40 is the lateral stripping structure; 41 is the limiting column; 42 is the stripping sleeve; 43 is the abutting step; 50 is the lifting plate; 51 is the lifting column; 52 is the pre-ejection column; 53 is the inclined wedge block; 54 is the driver; and 55 is the limiting step. Detailed Implementation

[0024] Example 1, please refer to Figure 1 , Figure 7 This is a schematic diagram of an injection mold and automated production line for a pedal bracket provided by this utility model. The pedal bracket injection mold includes: an upper mold base 10 and a lower mold base 20 arranged vertically at intervals, a side mold base 30 arranged slidably, and a lateral stripping structure 40 arranged on the side mold base 30. It can be imagined that this pedal bracket injection mold also includes other functional components and specific structures, such as electrical connection components, flow guiding components, cooling components, etc., which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0025] In this embodiment, as Figure 6 As shown, the lower mold base 20 is a fixed mold base, fixed on the machine base, and the upper mold base 10 is a movable mold base, located above the lower mold base 20. It is vertically raised and lowered by an externally connected upper-mounted hydraulic cylinder. A lifting guide hole 15 is provided between the upper mold base 10 and the lower mold base 20. The upper mold base 10 is provided with a lifting guide post 16 extending into the lifting guide hole 15. The lifting guide post 16 slides along the lifting guide hole 15 and is always located in the lifting guide hole 15, ensuring that the upper mold base 10 and the lower mold base 20 can accurately open and close the mold.

[0026] like Figure 2 As shown, at least one side mold base 30 is horizontally slidably connected to both sides of the upper end of the lower mold base 20. In this embodiment, there are two side mold bases 30 and they are disposed on the upper end of the lower mold base 20. A recessed sliding groove is provided in the lower mold base 20, and the side mold base 30 is slidably disposed in the sliding groove to ensure the stability and sliding accuracy of the sliding connection of the side mold base 30.

[0027] In this embodiment, the upper mold base 10 is provided with a driving part 12 that acts on the side mold base 30 and drives the side mold base 30 to slide. The side mold base 30 is provided with an inclined guide hole 21. The driving part 12 is an inclined rod 13 that is provided at the bottom of the upper mold base 10 and is correspondingly inserted into the inclined guide hole 21. It is conceivable that there is a corresponding clearance space on the lower mold base 20 to reduce the thickness of the side mold base 30 and ensure that the inclined rod 13 is always located in the inclined guide hole 21. When the upper mold base 10 and the lower mold base 20 are closed, the inclined rod 13 acts on the inclined guide hole 21. As the height of the upper mold base 10 decreases, the side mold base 30 slides inward to close the mold. When the upper mold base 10 and the lower mold base 20 are opened, as the height of the upper mold base 10 increases, the side mold base 30 slides outward to open the mold.

[0028] Optimally, an abutting inclined surface 22 is provided at the upper end of the side mold base 30, and a pressing cavity wall 14 acting on the abutting inclined surface 22 is provided at the bottom of the upper mold base 10. The pressing cavity wall 14 has a concave structure. As the upper mold base 10 descends, the pressing cavity wall 14 acts on the abutting inclined surface 22, forcing the side mold base 30 to slide inward. At the same time, it forms an outer limit and lock of the side mold base 30. When the upper mold base 10 rises, the upper mold base 10 can simultaneously contact the locking of the side mold base 30. This structure increases the force application contact area between the upper mold base 10 and the side mold base 30, avoiding force displacement of the side mold base 30 in the mold closing state.

[0029] In this embodiment, the inner walls of the upper mold base 10, the lower mold base 20, and the side mold base 30 are provided with molding cavities, and when the upper mold base 10, the lower mold base 20, and the side mold base 30 are closed, they form a closed product injection cavity 11. The upper mold base 10 is provided with an injection hole that communicates with the product injection cavity 11. Raw materials are injected into the product injection cavity 11 through the injection hole. It can be imagined that in this embodiment, the reference surface and through hole of the pedal bracket are set on the side mold base 30, and the complex irregular surface molding is set on the lower mold base 20, which facilitates mold opening and material removal.

[0030] In this embodiment, as Figure 3 As shown, the lateral stripping structure 40 includes a limiting post 41 disposed on the inner wall of the side mold base 30 along the sliding direction of the side mold base 30. The limiting post 41 is connected to the inner wall of the molding cavity of the side mold base 30 by a threaded structure. A stripping sleeve 42 is slidably sleeved on the limiting post 41. The stripping sleeve 42 can slide along the axial direction of the limiting post 41, and the limiting post 41 is used to prevent the stripping sleeve 42 from disengaging.

[0031] In the mold-closed state, the end of the stripper sleeve 42 furthest from the limiting post 41 abuts against the inner wall of the lower mold base 20, serving as an inner support component for the through hole during injection molding. During the first stage of stripping after mold opening, the inner wall of the molding cavity of the side mold base 30 disengages from contact with the outer wall of the product. The limiting post 41 moves with the side mold base 30 and moves relative to the stripper sleeve 42, which is still in the through hole of the product, until the stripper sleeve 42 moves to the limiting shoulder, i.e., during the second stage of stripping after mold opening. At this point, the stripper sleeve 42 moves synchronously with the side mold base 30 and the limiting post 41, and the stripper sleeve 42 disengages from the through hole of the product to complete the lateral stripping. The end of the stripper sleeve 42 furthest from the limiting post 41 extends into the product injection cavity 11, and its circumferential outer wall is provided with an abutment step 43. During the first stage of stripping, the abutment step 43 remains abutting against the outer wall of the product, facilitating the disengagement of the inner wall of the molding cavity of the side mold base 30 from contact with the outer wall of the product. The end face of the step 43 is flush with the end face of the side mold base 30, reducing the contact area between the stripper sleeve 42 and the product, making stripping simpler and less labor-intensive.

[0032] The two-stage lateral stripping method separates the stripping from the product's outer lateral wall from the stripping through the product's through hole, ensuring uniform stress distribution throughout the stripping process and preventing tearing damage.

[0033] In this embodiment, the inner wall of the side mold base 30 is also provided with forming protrusions 31 that are spaced out along the sliding direction of the side mold base 30. The forming protrusions 31 are located on the same side as the limiting post 41, which can increase the thickness of the reference surface of the product while forming a recessed groove, thereby increasing the structural strength of the product stripping surface.

[0034] In this embodiment, as Figure 4 , Figure 5 As shown, a lifting plate 50 is connected to the lower mold base 20. The lifting plate 50 is driven to rise and fall by an externally connected lower lifting cylinder. Lifting columns 51 that can extend into the bottom of the product injection cavity 11 are provided at intervals on the upper end of the lifting plate 50. When the mold is opened, the lifting columns 51 act on the bottom of the product, so that the product can be separated from the molding cavity of the lower mold base 20, which facilitates subsequent material unloading.

[0035] The lower mold base 20 is also provided with a pre-ejector 52 that is inclined and penetrates into the bottom of the product injection cavity 11. The lower mold base 20 is also provided with a wedge block 53 acting on the end of the pre-ejector 52 away from the product injection cavity 11, and a driver 54 driving the wedge block 53. The driver 54 has a driving cylinder. The wedge block 53 is slidably connected to the lower mold base 20 and moves after being driven by the driver 54. One end of the wedge block 53 acts on the pre-ejector 52, causing the pre-ejector 52 to move along the insertion hole. During mold closing and injection molding, the pre-ejector 52 acts flush with the inner wall of the molding cavity of the lower mold base 20. The pre-ejector 52 typically acts on the outer wall of complex surfaces such as narrow and deep grooves of the product. During mold opening and stripping, the pre-ejector 52 is pre-disengaged from contact with the outer wall of the product, avoiding the problem of negative pressure adsorption between the lower mold base 20 and the complex outer wall of the product, which would make stripping difficult. The lower mold base 20 is also provided with a limiting step 55 to prevent the pre-ejector 52 from over-extending, thus limiting the accuracy of the extension length of the pre-ejector 52.

[0036] It should be noted that the cylinders, hydraulic cylinders, and motors involved in this utility model are all commercially available parts and are existing technologies; their specific models will not be described here.

[0037] Example 2: This utility model also provides an automated production line with the pedal bracket injection mold as described above. Except for the pedal bracket injection mold, all other components are existing technology or commercially available parts.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A pedal bracket injection mold, characterized in that, include: An upper mold base (10) and a lower mold base (20) are vertically spaced apart. At least one side mold base (30) is horizontally slidably connected to the upper two sides of the lower mold base (20). The upper mold base (10) is provided with a driving part (12) that acts on the side mold base (30) and drives the side mold base (30) to slide. A product injection cavity (11) is provided between the upper mold base (10), the lower mold base (20) and the side mold base (30). The lateral stripping structure (40) includes a limiting post (41) disposed on the inner wall of the side mold base (30) along the sliding direction of the side mold base (30), a stripping sleeve (42) slidably sleeved on the limiting post (41) and whose end away from the limiting post (41) can abut against the inner wall of the lower mold base (20), and the stripping sleeve (42) whose end away from the limiting post (41) extends into the product injection cavity (11) and has an abutment step (43) on its circumferential outer wall.

2. The pedal bracket injection mold according to claim 1, characterized in that, The end face of the abutting step (43) is flush with the end face of the side mold base (30).

3. The pedal bracket injection mold according to claim 1, characterized in that, The side mold base (30) is provided with an inclined guide hole (21), and the driving part (12) is an inclined rod (13) provided at the bottom of the upper mold base (10) and correspondingly inserted into the inclined guide hole (21).

4. The pedal bracket injection mold according to claim 2, characterized in that, The side mold base (30) has an abutting inclined surface (22) at its upper end, and the upper mold base (10) has a pressing cavity wall (14) at its bottom that acts on the abutting inclined surface (22).

5. The pedal bracket injection mold according to claim 1, characterized in that, The lower mold base (20) is connected to a lifting plate (50) for lifting. The upper end of the lifting plate (50) is provided with lifting columns (51) that can extend into the bottom of the product injection cavity (11).

6. The pedal bracket injection mold according to claim 5, characterized in that, The lower mold base (20) is also provided with a pre-ejector (52) that is inclined to penetrate the bottom of the product injection cavity (11). The lower mold base (20) is also provided with a wedge block (53) that acts on the end of the pre-ejector (52) away from the product injection cavity (11), and a driver (54) that drives the wedge block (53).

7. The pedal bracket injection mold according to claim 6, characterized in that, The lower mold base (20) is also provided with a limiting step (55) to prevent the pre-ejector (52) from over-extending.

8. The pedal bracket injection mold according to claim 1, characterized in that, The inner wall of the side mold base (30) is also provided with forming protrusions (31) that are spaced out along the sliding direction of the side mold base (30).

9. The pedal bracket injection mold according to claim 1, characterized in that, A lifting guide hole (15) is provided between the upper mold base (10) and the lower mold base (20), and the upper mold base (10) is provided with a lifting guide column (16) that slides along the lifting guide hole (15).

10. An automated production line, characterized in that, An injection mold for a pedal bracket as described in any one of claims 1-9.

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