Blow molding die blank for car trunk

Abstract

The utility model discloses an automobile trunk blow molding mold blank, belongs to the technical field of mold equipment, and provides an automobile trunk blow molding mold blank capable of forming a trunk cover and a trunk bottom at a time, the automobile trunk blow molding mold blank comprises a base, the upper surface of the base is fixedly connected with a first fixing plate and a second fixing plate, and a guide rod is arranged between the first fixing plate and the second fixing plate; a box cover mold and a box bottom mold are connected to the guide rods in a sliding mode, a box cover forming cavity is formed in the side face, opposite to the box bottom mold, of the box cover mold, and a first receding half hole communicating with the top face of the box cover mold and the box cover forming cavity is further formed in the side face of the box bottom mold. The side face is further provided with a second receding half hole communicating with the top face of the box bottom mold and the box bottom forming cavity. By oppositely arranging the forming dies of the box cover and the box bottom, a complete set of box cover and box bottom structure is formed at a time in the blow molding process, the number of die equipment is reduced, the use cost of the die is reduced, and compared with two pieces of die equipment, the die is lower in energy consumption.

Description

Technical Field

[0001] The present application relates to the technical field of mold equipment, and in particular to a blow molding mold for a car trunk. Background Art

[0002] Car trunks are mostly made of synthetic materials, which are wear-resistant and lightweight. Since the trunk has a three-dimensional shape, it is usually formed by blow molding. However, in the prior art, the lid and bottom of a set of trunks are formed separately, requiring two sets of mold equipment, and the cost of use is relatively high. Summary of the invention

[0003] The purpose of the present application is to provide a blow mold for a car trunk which can form a trunk cover and a trunk bottom at one time.

[0004] To achieve the above purpose, the present application provides a blow molding mold for a car trunk: it includes a base, the upper surface of which is fixedly connected to a first fixed plate and a second fixed plate, a guide rod is arranged between the first fixed plate and the second fixed plate, a box cover mold and a box bottom mold are slidably connected to the guide rod, a box cover mold is provided with a box cover molding cavity on the side of the box cover mold opposite to the box bottom mold, and a first yielding half hole connecting the top surface of the box cover mold and the box cover molding cavity is also provided on the side, and a box bottom mold is provided with a box bottom molding cavity on the side of the box bottom mold opposite to the box cover mold, and a second yielding half hole connecting the top surface of the box bottom mold and the box bottom molding cavity is also provided on the side, and the box cover mold and the box bottom mold are driven by a driver to approach or move away from each other to realize mold closing and mold opening actions.

[0005] As a preferred embodiment, the driver includes a second drive fixed on the first fixed plate, the second drive adopts a hydraulic telescopic rod, the extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod, the movable end of the hydraulic telescopic rod is fixedly connected to the box bottom mold, driving the box bottom mold to move in the horizontal direction.

[0006] Preferably, the first fixing plate is provided with a first configuration hole penetrating the inner and outer walls, the hydraulic cylinder of the second drive passes through the first configuration hole, and a second limiting ring is fixedly connected to the inner and outer walls of the first fixing plate to ensure the stability of the second drive itself.

[0007] As a preference, the driver also includes a first drive fixed on the second fixed plate, and the first drive also uses a hydraulic telescopic rod, the extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod, and the movable end of the hydraulic telescopic rod is fixedly connected to the box cover mold, driving the box cover mold to move in the horizontal direction.

[0008] Preferably, the second fixing plate is provided with a second configuration hole penetrating the inner and outer walls, the hydraulic cylinder of the first drive passes through the second configuration hole, and a first limiting ring is fixedly connected to the inner and outer walls of the second fixing plate to ensure the stability of the first drive itself.

[0009] As a preferred embodiment, the box cover mold is provided with a first guide hole penetrating the opposite end faces at a portion outside the box cover molding cavity, which is suitable for cooperating with the guide rod to form a sliding pair, and the outer side surface of the box cover mold is provided with a first exhaust groove connected to the box cover molding cavity; the box bottom mold is provided with a second guide hole penetrating the opposite end faces at a portion outside the box bottom molding cavity, which is suitable for cooperating with the guide rod to form a sliding pair, and the outer side surface of the box bottom mold is provided with a second exhaust groove connected to the box bottom molding cavity for exhausting the air in the mold cavity during the blow molding process.

[0010] As a preference, there are at least two guide rods, and both ends of the guide rods are fixedly connected to the first fixing plate and the second fixing plate respectively through connecting rings to ensure the connection strength of the two ends of the guide rods.

[0011] Preferably, ribs are fixedly connected between the side surfaces of the first fixing plate and the second fixing plate and the upper surface of the base, and a discharge groove penetrating the upper and lower surfaces of the base is provided between the two ribs. The base is also provided with connecting holes for bolts and other connecting parts to pass through to fix the entire base to the mounting frame.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By relatively arranging the forming molds of the box cover and the box bottom, a set of the box cover and the box bottom structure can be formed at one time during the blow molding process, thereby reducing the number of mold equipment and the use cost of the mold. Compared with two mold equipment, the mold consumes less energy and has higher production efficiency;

[0014] (2) The design has a simple structure, convenient control, low failure rate, good stability, and is easy to maintain and service. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the blow molding mold of the automobile trunk;

[0016] Figure 2 It is a three-dimensional structural cross-sectional view of the blow molding blank of the automobile trunk after removing the trunk cover mold and the trunk bottom mold;

[0017] Figure 3 It is a first three-dimensional structural schematic diagram of the trunk cover mold of the automobile trunk blow molding mold;

[0018] Figure 4A second three-dimensional structural schematic diagram of the trunk cover mold of the automobile trunk blow molding mold blank;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the bottom mold of the automobile trunk blow molding mold;

[0020] Figure 6 This is a diagram showing the arrangement of the fixing plate of the automobile trunk blow mold on the base.

[0021] In the figure: 1. box cover mold; 101. first half hole for making way; 102. box cover forming cavity; 103. first guide hole; 104. first exhaust groove; 2. box bottom mold; 201. second half hole for making way; 202. box bottom forming cavity; 203. second guide hole; 204. second exhaust groove; 3. first drive; 301. first limiting ring; 4. second drive; 401. second limiting ring; 5. base; 501. discharge groove; 502. connecting hole; 6. guide rod; 601. connecting ring; 7. rib plate; 8. first fixing plate; 801. first configuration hole; 9. second fixing plate; 901. second configuration hole. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] like Figure 1-6 The blow molding mold blank of the automobile trunk shown includes a horizontally placed base 5, the upper surface of which is fixedly connected to a first fixing plate 8 and a second fixing plate 9, which are actually similar in structure and symmetrical to each other. A rib plate 7 is fixedly connected between the side surfaces of the first fixing plate 8 and the second fixing plate 9 and the upper surface of the base 5, which is used to improve the connection strength between the first fixing plate 8 and the second fixing plate 9 and the base 5. The base 5 is provided with a discharge groove 501 that passes through the upper and lower surfaces between the two rib plates 7, and the blow-molded molded parts will be delivered to the conveying mechanism below. The base 5 is also provided with a connecting hole 502 for bolts and other connecting parts to pass through to fix the base 5 on the mounting frame.

[0027] A guide rod 6 is arranged between the first fixed plate 8 and the second fixed plate 9. The guide rod 6 is parallel to the base 5 and is also placed horizontally. There are at least two guide rods 6. Four are used in this embodiment to better maintain the stability of the moving parts thereon. The two ends of the guide rod 6 are respectively fixedly connected to the first fixed plate 8 and the second fixed plate 9 through a connecting ring 601 to ensure the connection strength at both ends of the guide rod 6, thereby ensuring the stability of both ends of each guide rod 6. The box cover mold 1 and the box bottom mold 2 are slidably connected to the guide rod 6. The two cooperate to form a complete blow molding cavity. The box cover mold 1 is on the box cover. A first guide hole 103 penetrating the opposite end faces is provided in the portion outside the molding cavity 102. The number and position of the first guide holes 103 correspond to the number and position of the guide rods 6, and are used to cooperate with the guide rods 6 to form a sliding pair. The box bottom mold 2 is provided with a second guide hole 203 penetrating the opposite end faces in the portion outside the box bottom molding cavity 202. Similarly, the number and position of the second guide holes 203 correspond to the number and position of the guide rods 6, and are used to cooperate with the guide rods 6 to form a sliding pair. As a result, the box cover mold 1 and the box bottom mold 2 are restricted to slide only in the horizontal direction to achieve mold closing and mold separation.

[0028] A box cover forming cavity 102 is provided on the side of the box cover mold 1 facing the box bottom mold 2, which is used to form the outer contour of the box cover of the automobile trunk. The side is also provided with a first half-hole 101 connecting the top surface of the box cover mold 1 and the box cover forming cavity 102. The blowing end of the soft hot blank will be embedded in the first half-hole 101. A first exhaust groove 104 connecting the box cover forming cavity 102 is provided on the outer side of the box cover mold 1. During the expansion process of the soft hot blank, the air in the box cover forming cavity 102 will be squeezed out through the first exhaust groove 104. A box bottom forming cavity 202 is provided on the side of the box bottom mold 2 facing the box cover mold 1, which is used to form the outer contour of the bottom of the automobile trunk. The side is also provided with a second half-hole 201 connecting the top surface of the box bottom mold 2 and the box bottom forming cavity 202. The blowing end of the hot embryo will also be embedded in the second half-hole 201. When the second half-hole 201 and the first half-hole 101 are pressed against each other, a rotating cavity will be formed to accommodate the blowing end of the rotating body. The lower end of the blowing end will penetrate into the blow molding cavity formed between the box cover molding cavity 102 and the box bottom molding cavity 202, and allow the soft hot embryo to expand and fill the entire cavity. A second exhaust groove 204 connected to the box bottom molding cavity 202 is provided on the outer side of the box bottom mold 2. During the expansion process, the soft hot embryo will also force the air in the cavity to be discharged from the second exhaust groove 204, thereby ensuring that the internal air pressure of the soft hot embryo is always greater than the external air pressure, thereby continuing to expand until the outer surface of the hot embryo is close to the inner wall of the blow molding cavity, and the blow molding operation can be completed after cooling.

[0029] The box cover mold 1 and the box bottom mold 2 are driven by the driver to move closer to or farther away from each other. Moving closer means mold closing, and farther away means mold separation. The driver includes a second driver 4 fixed on the first fixed plate 8. The second driver 4 adopts a hydraulic telescopic rod, which can generate a large extrusion force to ensure the stability of mold closing. The extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod 6. The movable end of the hydraulic telescopic rod is fixedly connected to the box bottom mold 2, so that the second driver 4 will not be hindered when driving the box bottom mold 2, but very smoothly. The first fixed plate 8 is provided with a first configuration hole 801 that passes through the inner and outer walls. The hydraulic cylinder barrel of the second driver 4 passes through the first configuration hole 801, and is fixedly connected to the inner and outer walls of the first fixed plate 8 with a second limit ring 401 to prevent the second driver 4 does not cause irregular movement, to ensure the stability of the second drive 4, the driver also includes a first drive 3 fixed on the second fixed plate 9, the first drive 3 also uses a hydraulic telescopic rod, which can provide an extrusion force to resist the second drive 4, thereby ensuring the force balance between the box cover mold 1 and the box bottom mold 2, the extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod 6, the movable end of the hydraulic telescopic rod is fixedly connected to the box cover mold 1, similarly, to avoid movement obstruction and ensure smooth movement, the second fixed plate 9 is provided with a second configuration hole 901 that runs through the inner and outer walls, the hydraulic cylinder barrel of the first drive 3 passes through the second configuration hole 901, and a first limit ring 301 is fixedly connected to the inner and outer walls of the second fixed plate 9, similarly, to ensure the stability of the first drive 3.

[0030] Working principle: Before the blowing end is pressurized, it will bring the soft hot embryo down to between the first half hole 101 and the second half hole 201. The box cover mold 1 and the box bottom mold 2 are driven by the driver to move closer to each other, and the soft hot embryo is buckled between the box cover molding cavity 102 and the box bottom molding cavity 202 to achieve mold closing. Then the blowing end blows high-temperature and high-pressure gas into the soft hot embryo to expand the soft hot embryo until it fits with the inner wall of the blow molding cavity formed between the box cover mold 1 and the box bottom mold 2, and waits for After cooling, the trunk lid and bottom of the car trunk can be formed at one time. Finally, the trunk lid mold 1 and the trunk bottom mold 2 are separated by the drive and returned to the initial position. The molded part is free from obstacles. Continuing to blow air into the molded part will make the molded part separate from the blowing end and realize demoulding. After demoulding, it is transmitted to the slitting station through the conveyor belt. The integrated trunk lid and bottom are cut apart to achieve an independent and complete set of trunk lid and bottom of the car trunk, which effectively reduces the number and movements of blow molding molds, and reduces costs and time.

[0031] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A blow mold for a car trunk, characterized in that: The invention comprises a base (5), the upper surface of which is fixedly connected to a first fixing plate (8) and a second fixing plate (9), a guide rod (6) is arranged between the first fixing plate (8) and the second fixing plate (9), a box cover mold (1) and a box bottom mold (2) are slidably connected to the guide rod (6), a box cover molding cavity (102) is provided on the side of the box cover mold (1) facing the box bottom mold (2), and a first half-hole (101) is also provided on the side for connecting the top surface of the box cover mold (1) and the box cover molding cavity (102), a box bottom molding cavity (202) is provided on the side of the box bottom mold (2) facing the box cover mold (1), and a second half-hole (201) is also provided on the side for connecting the top surface of the box bottom mold (2) and the box bottom molding cavity (202), and the box cover mold (1) and the box bottom mold (2) are moved closer to or farther away from each other under the drive of a driver.

2. The automobile trunk blow mold according to claim 1, characterized in that: The driver comprises a second driver (4) fixed on the first fixed plate (8), the second driver (4) adopts a hydraulic telescopic rod, the extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod (6), and the movable end of the hydraulic telescopic rod is fixedly connected to the box bottom mold (2).

3. The automobile trunk blow mold according to claim 2, characterized in that: The first fixing plate (8) is provided with a first configuration hole (801) penetrating the inner and outer walls, the hydraulic cylinder of the second drive (4) passes through the first configuration hole (801), and a second limiting ring (401) is fixedly connected to the inner and outer walls of the first fixing plate (8).

4. The automobile trunk blow mold according to claim 3, characterized in that: The driver also includes a first drive (3) fixed on the second fixed plate (9), and the first drive (3) also uses a hydraulic telescopic rod, the extension direction of the hydraulic telescopic rod is consistent with the direction of the guide rod (6), and the movable end of the hydraulic telescopic rod is fixedly connected to the box cover mold (1).

5. The automobile trunk blow mold according to claim 4, characterized in that: The second fixing plate (9) is provided with a second configuration hole (901) penetrating the inner and outer walls, the hydraulic cylinder of the first drive (3) passes through the second configuration hole (901), and a first limiting ring (301) is fixedly connected to the inner and outer walls of the second fixing plate (9).

6. The automobile trunk blow mold according to any one of claims 1 to 5, characterized in that: The box cover mold (1) is provided with a first guide hole (103) penetrating the opposite end faces at a portion outside the box cover molding cavity (102), which is suitable for cooperating with the guide rod (6) to form a sliding pair, and the outer side surface of the box cover mold (1) is provided with a first exhaust groove (104) connected to the box cover molding cavity (102); the box bottom mold (2) is provided with a second guide hole (203) penetrating the opposite end faces at a portion outside the box bottom molding cavity (202), which is suitable for cooperating with the guide rod (6) to form a sliding pair, and the outer side surface of the box bottom mold (2) is provided with a second exhaust groove (204) connected to the box bottom molding cavity (202).

7. The automobile trunk blow mold according to claim 6, characterized in that: There are at least two guide rods (6), and two ends of the guide rods (6) are respectively fixedly connected to the first fixing plate (8) and the second fixing plate (9) via a connecting ring (601).

8. The automobile trunk blow mold according to claim 7, characterized in that: A rib plate (7) is fixedly connected between the side surfaces of the first fixing plate (8) and the second fixing plate (9) and the upper surface of the base (5); a discharge groove (501) penetrating the upper and lower surfaces of the base (5) is provided between the two rib plates (7); and a connecting hole (502) is also provided on the base (5).

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