Ejection mechanism convenient to demould for glove box injection mould

Abstract

The utility model relates to the technical field of glove box injection molds, in particular to a convenient-to-demould type ejection mechanism for a glove box injection mold, which comprises a synchronous ejection plate, an adjusting sliding barrel arranged on the synchronous ejection plate, an ejection rod connected in the adjusting sliding barrel in a sliding manner, a bottom frame arranged below the synchronous ejection plate, an injection molding table and a demoulding cylinder arranged on the bottom frame, a top frame and a lower mold base are arranged on the injection molding table, a cavity is formed in the lower mold base, a rounding surface and an anti-sticking layer are arranged on the ejector rod, a locking screw pin is arranged on the adjusting sliding barrel, a rotating handle head and a connecting disc are arranged on the locking screw pin, a limiting pressing rod is arranged on the connecting disc, and a magnetic attraction block is arranged on the limiting pressing rod. According to the demolding ejection structure for the automobile glove box injection mold, the mold stripping convenience of the demolding ejection structure for the automobile glove box injection mold is integrally improved, the application range of the demolding ejection structure for the automobile glove box injection mold is widened, and stable limiting of a locking screw pin and an ejection rod is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glove box injection molds, in particular to an ejection mechanism for an easy-to-demold glove box injection mold. Background Technique

[0002] An automotive glove box, also known as a co-pilot storage box, is a small storage space usually located in front of the co-pilot seat in a vehicle. Its original design intention is to provide a convenient place for drivers and passengers to store gloves and other small items, so it is named "glove box".

[0003] When an automotive glove box is produced, it is generally integrally formed by an injection mold. Specifically, molten plastic pellets are generally injected into the cavity in the lower mold base, and then the air cylinder is started to drive the core of the upper mold base above to insert into the cavity. After cooling and forming, the core is reset upward, and then demolding can be carried out.

[0004] Currently, for the demolding and ejection structure of existing automotive glove box injection molds, it generally ejects with a single rod. This single-rod ejection method has a single force, and it is easy for the finished product of the automotive glove box to get stuck in the cavity, greatly reducing the demolding convenience of the demolding and ejection structure of the automotive glove box injection mold.

[0005] In addition, for the demolding and ejection structure of existing automotive glove box injection molds, most of its ejector rods cannot adjust the spacing according to the cavity height of different sizes, greatly reducing the applicable range of the demolding and ejection structure of the automotive glove box injection mold.

[0006] The above problems are widespread and urgently need to be improved. Content of the Utility Model

[0007] The purpose of the utility model is to solve the above-mentioned drawbacks existing in the prior art, and to propose an ejection mechanism for an easy-to-demold glove box injection mold.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0009] Design an ejection mechanism for an easy-to-demold glove box injection mold, including a synchronous top plate. An adjustment sliding cylinder is arranged on the synchronous top plate, and an ejector rod is slidably connected in the adjustment sliding cylinder. A bottom frame is arranged below the synchronous top plate. An injection table and an ejection air cylinder are arranged on the bottom frame. A top frame and a lower mold base are arranged on the injection table. A cavity is arranged on the lower mold base. An injection air cylinder is arranged on the top frame. An upper mold base is arranged on the injection air cylinder. A core is arranged on the upper mold base. The ejector rod is provided with a rounded surface and an anti-sticking layer. A locking pin is arranged on the adjustment sliding cylinder. A turning handle head and a connecting plate are arranged on the locking pin. A limiting pressure rod is arranged on the connecting plate. A magnetic attracting block is arranged on the limiting pressure rod.

[0010] Further, the telescopic rod of the demolding cylinder is fixedly arranged with the synchronous top plate. The adjusting sliding cylinder and the ejector rod are grouped into six groups arranged evenly. The ejector rod passes through the injection molding table and is slidably inserted into the lower mold base.

[0011] Further, a damping sleeve is arranged in the inner cavity of the adjusting sliding cylinder. The damping sleeve is made of damping silica gel, and the inner cavity of the damping sleeve is damping sleeved with the outer wall surface of the ejector rod.

[0012] Further, the locking pin passes through the damping sleeve and is threadedly connected with the side wall of the adjusting sliding cylinder. One end of the locking pin facing the ejector rod is provided with a damping head.

[0013] Further, the turning handle head is arranged at the right end of the locking pin, and the turning handle head is integrally in a rhombus structure.

[0014] Further, the rounded surface is arranged along the corner of the outer side wall of the top end of the ejector rod, and the anti-adhesion layer is evenly coated along the top surface of the rounded surface and the top surface of the ejector rod. The anti-adhesion layer is a PTFE polytetrafluoroethylene coating.

[0015] Further, the limiting pressure rod and the magnetic attraction block are grouped into four groups arranged circumferentially.

[0016] The ejection mechanism for a glove box injection mold that is easy to demold proposed by the present utility model has the beneficial effects as follows:

[0017] 1. By arranging a synchronous top plate on the demolding cylinder, arranging six groups of ejector rod structures on the synchronous top plate, then arranging a rounded surface at the top end of the ejector rod, and arranging an anti-adhesion layer structure on the top end of the ejector rod and the surface of the rounded surface, the present utility model realizes the bottom comprehensive ejection and demolding of the finished product of the automotive glove box in the cavity, and at the same time avoids the adhesion between the top end surface of the ejector rod and the finished product of the automotive glove box, and overall improves the demolding convenience of the demolding and ejection structure for the automotive glove box injection mold.

[0018] 2. By arranging an adjusting sliding cylinder structure with a damping sleeve between the synchronous top plate and the ejector rod, and arranging a locking pin structure on the damping sleeve, the present utility model can independently vertically adjust and position-lock the distance between the top end of each ejector rod and the inner wall of the cavity, thereby ensuring the adaptability of each ejector rod to eject and demold the bottom surface of the finished product of the automotive glove box in the cavity, and overall improving the application range of the demolding and ejection structure for the automotive glove box injection mold.

[0019] 3. The utility model improves the stability limit of the locking pin and the ejector rod by setting a connecting plate with a limiting pressure rod on the locking pin and arranging a magnetic attraction block structure on the limiting pressure rod of the connecting plate. When the locking pin damps and positions the ejector rod through the damping head, the magnetic attraction block will also perform magnetic adsorption positioning with the outer wall surface of the adjusting sliding cylinder, further improving the stable limit for the locking pin and the ejector rod. Description of the Drawings

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0021] Figure 2 of the utility model Figure 1 Partial enlarged view at A in;

[0022] Figure 3 of the utility model Figure 2 Three-dimensional schematic diagram of the locking pin in;

[0023] Figure 4 of the utility model Figure 1 Partial sectional view of the front view in;

[0024] Figure 5 of the utility model Figure 4 Partial enlarged view of the top end of the ejector rod in;

[0025] Figure 6 of the utility model Figure 4 Partial enlarged view at B in.

[0026] In the figure: 1 synchronous top plate; 11 demolding cylinder; 12 chassis; 2 injection molding table; 21 lower mold base; 22 cavity; 3 top frame; 31 injection molding cylinder; 32 upper mold base; 33 core; 4 adjusting sliding cylinder; 41 damping sleeve; 5 ejector rod; 51 rounded surface; 52 anti-sticking layer; 6 turning handle head; 61 connecting plate; 7 locking pin; 71 damping head; 8 limiting pressure rod; 81 magnetic attraction block. Detailed Implementation Manner

[0027] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0028] Refer to Figures 1-6, An ejection mechanism for an injection mold of a glove box that is easy to demold, including a synchronous top plate 1. An adjustment sliding cylinder 4 is provided on the synchronous top plate 1. A push rod 5 is slidably connected inside the adjustment sliding cylinder 4. A bottom frame 12 is provided below the synchronous top plate 1. An injection table 2 and an ejection cylinder 11 are provided on the bottom frame 12. A top frame 3 and a lower mold base 21 are provided on the injection table 2. A cavity 22 is provided on the lower mold base 21. An injection cylinder 31 is provided on the top frame 3. An upper mold base 32 is provided on the injection cylinder 31. A core 33 is provided on the upper mold base 32. A rounded surface 51 and an anti-sticking layer 52 are provided on the push rod 5. A locking pin 7 is provided on the adjustment sliding cylinder 4. A turning handle head 6 and a connection disk 61 are provided on the locking pin 7. A limiting pressure rod 8 is provided on the connection disk 61. A magnetic attraction block 81 is provided on the limiting pressure rod 8. The injection table 2, the lower mold base 21, the cavity 22, the injection cylinder 31, the upper mold base 32, and the core 33 described in this patent are the injection mold devices for automotive glove boxes, which are prior arts, and their injection principles are also public technologies. Some existing structures are not drawn and labeled, so there is no need to elaborate.

[0029] Specifically, the telescopic rod of the ejection cylinder 11 is fixedly arranged with the synchronous top plate 1. The adjustment sliding cylinder 4 and the push rod 5 are in a group, and there are a total of six groups arranged evenly. The push rod 5 passes through the injection table 2 and is slidably inserted into the lower mold base 21, and can eject the finished automotive glove box in the core 33 upward for full-bottom demolding.

[0030] Furthermore, a damping sleeve 41 is arranged in the inner cavity of the adjustment sliding cylinder 4. The damping sleeve 41 is made of damping silica gel. The inner cavity of the damping sleeve 41 is damping sleeved with the outer wall surface of the push rod 5. When the damping head 71 no longer dampingly limits the push rod 5, the damping effect of the damping sleeve 41 can prevent the push rod 5 from sliding downward randomly.

[0031] Still further, the locking pin 7 passes through the damping sleeve 41 and is threadedly connected to the side wall of the adjustment sliding cylinder 4. One end of the locking pin 7 facing the push rod 5 is provided with a damping head 71. The damping head 71 is made of polyurethane and has high elastic damping to achieve damping limit of the push rod 5.

[0032] More specifically, the turning handle head 6 is arranged at the right end of the locking pin 7. The turning handle head 6 is of a rhombus-shaped structure as a whole and can be directly rotated by hand, which is very convenient.

[0033] Generally speaking, the rounded surface 51 is arranged along the outer wall corner of the top end of the push rod 5, so that the top surface of the push rod 5 can smoothly slide out from the cavity 22, thereby improving the convenience of demolding.

[0034] The anti-sticking layer 52 is evenly coated along the top surface of the rounded surface 51 and the top surface of the push rod 5. The anti-sticking layer 52 is a PTFE polytetrafluoroethylene coating, which is high-temperature resistant and durable and has anti-sticking property.

[0035] Finally, the limiting pressure rod 8 and the magnetic attraction block 81 are a group, and there are a total of four groups arranged in a circumferential array. The magnetic attraction block 81 is made of artificial magnet material, and the four groups further improve the magnetic attraction limiting effect.

[0036] Working mode: When demolding, start the demolding cylinder 11, and drive the six ejector rods 5 to move upward synchronously through the synchronous top plate 1, then the finished product of the automotive glove box after injection molding in the core 33 can be ejected upward and demolded comprehensively from the bottom. At the same time, the anti-sticking layer 52 provided can avoid the situation that the top end surface of the ejector rod 5 adheres to the finished product of the automotive glove box, which overall improves the demolding convenience of the demolding and ejecting structure for the injection mold of the automotive glove box.

[0037] Moreover, taking the ejector rod 5 at the front end on the left side as an example, if adjustment is needed, the ejector rod 5 can be adjusted by damping sliding up and down along the inner cavity of the damping sleeve 41, so as to ensure the adaptive length of the current top end of the ejector rod 5 for ejecting and demolding the bottom surface of the finished product of the automotive glove box in the cavity 22. After the adjustment is completed, the turning handle head 6 can be rotated clockwise to drive the locking pin 7 to rotate clockwise, and the locking pin 7 is driven to move leftward through screw transmission. When the damping head 71 is damped and squeezed against the outer wall surface of the ejector rod 5, stop rotating the turning handle head 6, and the distance between the top end of each ejector rod 5 and the inner wall of the cavity 22 can be independently adjusted vertically and positioned and locked, thus ensuring the adaptability of each ejector rod 5 for ejecting and demolding the bottom surface of the finished product of the automotive glove box in the cavity 22, and overall improving the applicable range of the demolding and ejecting structure for the injection mold of the automotive glove box.

[0038] In addition, when the damping head 71 is damped and squeezed against the outer wall surface of the ejector rod 5, the magnetic attraction block 81 will also be magnetically adsorbed and positioned on the outer wall surface of the adjusting sliding cylinder 4, further improving the stable limiting of the locking pin 7 and the ejector rod 5.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An ejection mechanism for an injection mold of a glove box that is easy to demold, comprising a synchronous ejector plate (1), characterized in that: The synchronous top plate (1) is provided with an adjusting slide cylinder (4), and a push rod (5) is slidably connected in the adjusting slide cylinder (4). A bottom frame (12) is provided below the synchronous top plate (1), and an injection molding table (2) and a mold ejection cylinder (11) are provided on the bottom frame (12). The injection molding table (2) is provided with a top frame (3) and a lower mold base (21), and a mold cavity (22) is provided on the lower mold base (21). The top frame (3) is provided with an injection molding cylinder (31). An upper mold base (32) is provided on the injection molding cylinder (31), a core (33) is provided on the upper mold base (32), a rounded surface (51) and an anti-sticking layer (52) are provided on the push rod (5), a locking screw pin (7) is provided on the adjusting slide cylinder (4), a turning handle (6) and a connecting plate (61) are provided on the locking screw pin (7), a limiting pressure rod (8) is provided on the connecting plate (61), and a magnetic suction block (81) is provided on the limiting pressure rod (8).

2. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: The telescopic rod of the ejection cylinder (11) is fixedly arranged with the synchronous ejector plate (1), the adjusting slide cylinder (4) and the ejector rod (5) form a group, and there are a total of six groups evenly arranged, and the ejector rod (5) passes through the injection molding table (2) and is slidably inserted into the lower mold base (21).

3. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: A damping sleeve (41) is arranged in the inner cavity of the regulating slide cylinder (4), the damping sleeve (41) is made of damping silica gel, and the inner cavity of the damping sleeve (41) and the outer wall surface of the push rod (5) are damping sleeved.

4. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: The locking screw pin (7) passes through the damping sleeve (41) and is threadedly connected to the side wall of the adjusting slide cylinder (4); a damping head (71) is provided at one end of the locking screw pin (7) facing the push rod (5).

5. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: The turning crown head (6) is arranged at the right end of the locking screw pin (7), and the turning crown head (6) is a diamond-shaped structure as a whole.

6. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: The chamfered surface (51) is arranged along the corner of the outer wall of the top end of the push rod (5), the anti-adhesion layer (52) is evenly coated along the top end surface of the chamfered surface (51) and the top end surface of the push rod (5), and the anti-adhesion layer (52) is a PTFE polytetrafluoroethylene coating.

7. The ejection mechanism for an easy-to-release glove box injection mold according to claim 1, characterized in that: The limiting pressure rod (8) and the magnetic attraction block (81) form a group, and there are four groups in total arranged in a circle.

Images