CN216001307U - Ejection mechanism of lamp shell - Google Patents

Abstract

The utility model discloses a lamp shell ejection mechanism, a fixed die device is provided with a plurality of first mounting holes, the bottom plate is provided with a plurality of abdicating holes, the ejection mechanism further comprises a first movable plate, a second movable plate and a plurality of second ejector rods matched with one side of the bosses on the circumferential surface of the lamp shell, the first movable plate and the second movable plate are superposed and configured on the bottom plate, through holes are formed in the first movable plate and the second movable plate, one end of the ejector column penetrates through the through holes in the first movable plate and the second movable plate and then is fixed with the bottom plate, the other end of the ejector column is matched with the middle of the fixed die device, the second movable plate is provided with assembling holes, one end of the first ejector rod and one end of the second ejector rod are matched with the first movable plate and/or the second movable plate respectively, the fixed die device is further provided with a plurality of second mounting holes, the other end of the first ejector rod is matched with the first mounting hole, and the other end of the second ejector rod is matched with the second mounting hole. The utility model has the characteristic of easy demoulding of the lamp shell.

Description

Ejection mechanism of lamp shell

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a lamp shell ejection mechanism.

Background

A lamp is composed of a lamp body with light transmitting, distributing and light distributing functions, all parts for fixing and protecting light source, and circuit accessories connected to power supply.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ejection mechanism of a lamp shell, which has the characteristic of easily demoulding the lamp shell.

The technical scheme for solving the technical problems is as follows:

the lamp shell ejection mechanism comprises a fixed die device, a bottom plate, an ejection column, a plurality of first ejector rods matched with the bottom of the lamp shell, a plurality of first mounting holes are formed in the fixed die device, a plurality of abdicating holes are formed in the bottom plate, the ejection mechanism further comprises a first movable plate, a second movable plate and a plurality of second ejector rods matched with one side of a boss on the peripheral surface of the lamp shell, the first movable plate and the second movable plate are overlapped and arranged on the bottom plate, through holes are formed in the first movable plate and the second movable plate, one end of the ejection column penetrates through the through holes in the first movable plate and the second movable plate and then is fixed with the bottom plate, the other end of the ejection column is matched with the middle of the fixed die device, assembling holes are formed in the second movable plate, one ends of the first ejector rods and the second ejector rods are respectively matched with the first movable plate and/or the second movable plate, a plurality of second mounting holes are further formed in the fixed die device, the other end of the first ejector rods is matched with the first mounting holes, the other end of the second ejector rod is matched with the second mounting hole.

According to the utility model, the second ejector rod applies ejection acting force to one side of the boss of the lamp housing, and the ejection acting force formed by the first ejector rod to the bottom of the lamp housing, so that the lamp housing is stressed in multiple aspects in the ejection process, and the demolding is easier.

Drawings

Fig. 1 is a perspective view of a production mold for an automotive lamp housing;

FIG. 2 is a schematic structural diagram of a fixed mold device;

FIG. 3 is a schematic structural diagram of a first slider;

FIG. 4 is a schematic cross-sectional view of a first slider;

FIG. 5 is a schematic view of a second slider assembly;

FIG. 6 is a schematic structural view of a moving die assembly;

FIG. 7 is a schematic structural view of a first spacing insert;

FIG. 8 is a schematic view of an ejection mechanism;

fig. 9 and 10 are sectional views of the ejection mechanism at different sections, respectively;

FIG. 11 is a schematic view of a third ram;

reference numbers in the drawings:

a lamp housing A;

the fixed die device 100, a first mounting hole 101, a second mounting hole 102, a third mounting hole 103, a fixed die base 104, a first cavity 105, a first notch 105a, a first groove body 106, a first slide block 107, a cooling channel 107a, a first positioning hole 107b, a first insert 108, a supporting part 108a, a first spring 109, an isolation seat 110, a second groove body 111, a second slide block 112, a second conical surface 112a, a second positioning hole 112b, a butting part 113, a second spring 114 and a second insert 115;

the die assembly comprises a moving die device 200, a moving die base 201, a first male die 202, a first extrusion part 204, a first limit insert 205, a mounting part 205a, a flange 205b, an assembling groove 205c, a first positioning column 206, a second isolation base 207, a second extrusion part 208 and a second positioning column 209;

the ejection mechanism 300, the bottom plate 301, the abdicating hole 301a, the top column 302, the first top rod 303, the first movable plate 304, the second movable plate 305, the second top rod 306, the hinge seat 307, the movable rod 308, the protrusion 309, the first groove 310, the connection seat 307a, the hinge block 307b, the groove body 307c, the limiting portion 307d, the first groove 310, the limiting column 311, the upright column 312, the spring 313 and the first support 314.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

the production mold of the automobile lamp shell comprises a fixed mold device 100, a movable mold device 200 and an ejection mechanism 300, wherein the fixed mold device 100 is matched with the movable mold device 200, the ejection mechanism 300 is matched with the fixed mold device 100, and each part and the relationship among the parts are respectively explained in detail as follows:

the fixed die device 100 comprises a fixed die base 104 and a first slide assembly, and the fixed die device 100 is described in detail below:

the fixed die holder 104 is provided with a first cavity 105 and a first groove body 106 positioned on one side of the first cavity 105, the orifice of the first mounting hole 101 is positioned on the bottom surface of the first cavity 105, and the orifice of the second mounting hole 102 is positioned on one side of the first cavity 105. In this embodiment, two first cavities 105 are provided, in order to illustrate and clarify the structure of the mold fixing device 100, one of the first cavities 105 is installed with the lamp housing a, and the other first cavity 105 is exposed.

The first slide block assembly is arranged in the first groove body 106, when the movable die device 200 and the fixed die device 100 are assembled, the movable die device 200 is matched with the first slide block assembly, and the first slide block assembly is extruded by the movable die device 200 and then matched with the first cavity 105; through first slider assembly, the cooperation is formed with first slider assembly to the partly of the outer wall of lamp body A that forms after the end of moulding plastics to first slider assembly forms the support to the boss on the lamp body A global.

The first slide block assembly comprises a first slide block 107 and a first spring 109, the first slide block 107 is in sliding fit in the first groove body 106, a first insert 108 for forming a part of the first cavity 105 is arranged on the end surface of the first slide block 107 facing the first cavity 105, and a first notch 105a matched with the first insert 108 is arranged on the peripheral surface of the first cavity 105; due to the complex structure of the first cavity 105, the first insert 108 is a part of the first cavity 105, which is beneficial to reducing the difficulty of manufacturing the first cavity 105. The first slider 107 has an L-shaped cross section, one surface of the first slider 107 is a tapered surface that fits the movable mold device 200, and when the movable mold device 200 fits the tapered surface, the first slider 107 moves by being pressed as the movable mold device 200 continues to move.

One end of the first spring 109 is engaged with the first slider 107, and the other end of the first spring 109 is engaged with the fixed mold base 104. When the movable mold device 200 and the fixed mold device 100 are closed, the movable mold device 200 is engaged with the first slider assembly, the first slider 107 is pushed by the movable mold device 200 to move to the first cavity 105, in the process, the first slider 107 compresses the first spring 109, the first spring 109 accumulates elastic potential energy, when the movable mold device 200 and the fixed mold device 100 are separated, the elastic potential energy accumulated by the first spring 109 is released, the first spring 109 pushes the first slider 107 to move to the outer side of the first cavity 105, and the first slider 107 is separated from the lamp housing a which is injection molded.

The first slider 107 is provided with a plurality of cooling channels 107a, and the cooling channels 107a extend in the transverse direction and the longitudinal direction of the first slider 107. Cooling medium is input into the cooling channel 107a or a pipeline loaded with the cooling medium is installed, a heat dissipation effect is formed on the first sliding block 107 through the cooling medium, the first sliding block 107 absorbs heat on the injection-molded lamp shell A matched with the first sliding block 107 through heat transfer, so that the heat of the lamp shell A in the injection molding process is dissipated, and the lamp shell A is favorably and quickly molded.

The first slider 107 is provided with at least one first positioning hole 107b, in this embodiment, the first slider 107 is provided with two first positioning holes 107b, the first positioning holes 107b are matched with the first positioning posts 206 on the moving die device 200, so that the first slider 107 is prevented from moving under the tension of the first spring 109, preferably, the first positioning holes 107b are inclined holes, the first positioning posts 206 on the moving die device 200 are also arranged in an inclined state, the first positioning holes 107b and the first positioning posts 206 are arranged in an inclined state, as the first slider 107 moves towards the first cavity 105, the first positioning posts 206 can be kept matched with the first positioning holes 107b while feeding towards the first positioning holes 107b, and in addition, the first positioning posts 206 apply thrust to the first slider 107 when feeding towards the first positioning holes 107 b.

The first insert block 108 is provided with a supporting part 108a for supporting the boss on the lamp housing A, and the supporting part 108a and the lamp housing A which is injection-molded form an inosculation effect, so that the lamp housing A is supported and limited, and the lamp housing A is prevented from shrinking or expanding under the action of gravity.

The fixed die holder 104 further includes an isolation seat 110 located at the other side of the first cavity 105, and the isolation seat 110 is provided with a plurality of second grooves 111. In this embodiment, because two lamps on one vehicle are in mirror symmetry, two first cavities 105 are disposed on the fixed die base 104, and the two first cavities 105 are also in mirror symmetry, so that two lamp housings a can be obtained by injection molding on the same secondary die once, and the isolation base 110 is located between the two first cavities 105, or the isolation base 110 is located on a side portion of any one first cavity 105.

In this embodiment, the fixed die device 100 further includes a second slide assembly disposed in the second slot 111, the movable die device 200 is engaged with the second slide assembly when the movable die device 200 and the fixed die device 100 are closed, and the second slide assembly is pressed by the movable die device 200 and then engaged with the first cavity 105. In this embodiment, the second slider assembly is also a part that is pieced together to form the first cavity 105, and further, in order to reduce the difficulty in manufacturing the first cavity 105, the second slider assembly is coupled to the first cavity 105 by driving the moving die apparatus 200 during the mold closing process.

The second sliding block assembly comprises a second sliding block 112, a second spring 114 and a second insert 115 for forming a part of the first cavity 105, one end of the second sliding block 112 is provided with a second tapered surface 112a matched with the moving die device 200, the second groove body 111 is provided with a second notch, and the other end of the second sliding block 112 is provided with a top part 113 matched with the second notch on the second groove body 111; one end of the second spring 114 abuts against the second slider 112, and the other end of the second spring 114 abuts against the fixed mold base 104. The second insert 115 is mated to the first cavity 105, preferably with the second insert 115 mated to the first cavity 105. The second slide 112 moves towards the first cavity 105 to engage with the second insert 115. Preferably, after the second slide block 112 moves towards the first cavity 105, the abutting portion 113 on the second slide block 112 is matched with the second insert 115, and the abutting portion 113 abuts against the second insert 115, so that the abutting portion 113 limits the second insert 115 and prevents the second insert 115 from displacing during injection molding.

When the movable mold device 200 and the fixed mold device 100 are closed, the movable mold device 200 is matched with the second taper surface 112a on the second slide block 112, the second slide block 112 is extruded by the movable mold device 200 and moves towards the first cavity 105, in the process, the abutting part 113 and the second insert 115 form abutting, the second slide block 112 compresses the second spring 114, the second spring 114 accumulates elastic potential energy, when the movable mold device 200 is separated from the fixed mold device 100, the elastic potential energy accumulated by the second spring 114 is released, the second spring 114 pushes the second slide block 112 to move towards the outer side of the first cavity 105, and the second slide block 112 is separated from the lamp housing A formed by injection molding.

The second slider 112 is provided with at least one second positioning hole 112b, in this embodiment, the second slider 112 is provided with one second positioning hole 112b, the second positioning hole 112b is matched with the second positioning post 209 on the movable die device 200, so as to prevent the second slider 112 from moving under the tension of the second spring 114, preferably, the second positioning hole 112b is an inclined hole, the second positioning post 209 on the movable die device 200 is also arranged in an inclined state, and by arranging the second positioning hole 112b and the second positioning post 209 in an inclined state, as the second slider 112 moves towards the first cavity 105, the second positioning hole 112b and the second positioning post 209 can be kept matched, and at the same time, the second positioning post applies a pushing force to the second slider 112.

The movable die device 200 comprises a movable die holder 201, a cooling assembly (not shown in the figure), a first extrusion part 204 with an extrusion conical surface, and a plurality of first limiting inserts 205, wherein the movable die holder 201 is provided with a first male die 202, the movable die holder 201 is provided with an injection molding channel, the cooling assembly is matched with the movable die holder 201, preferably, the cooling assembly is installed inside the movable die holder 201, and the first extrusion part 204 is arranged on the movable die holder 201 and is positioned on one side of the first male die 202; the first limit inserts 205 are located at one side of the first punch 202, and the plurality of first limit inserts 205 are fixed with the movable die holder 201.

When the movable die device 200 and the fixed die device 100 are clamped, the conical surface on the first extrusion part 204 is matched with the conical surface on the first slide block 107, and with the continuous feeding of the movable die device 200, the first slide block 107 is pushed by the first extrusion part 204 and moves towards the first cavity 105, so that the first insert block 108 on the first slide block 107 is matched with the first notch 105a on the first cavity 105 to form a complete cavity of the lamp housing a. In this embodiment, the movable mold device 200 not only plays the original role of the movable mold, but also plays the role of driving the first slide block 107 to cooperate with the first cavity 105 to form a complete cavity of the lamp housing a.

The first insert 205 includes a mounting portion 205a and a flange 205b, one end of the mounting portion 205a is provided with a mounting groove 205c, the flange 205b is provided at one end of the mounting portion 205a, and a first gap is formed between the flange 205b and a boss of the first punch 202 forming the lamp housing a. Through first spacing insert 205, can form the supporting role to the boss on the lamp body A of injection moulding to first spacing insert 205 makes alone, is favorable to reducing the manufacturing degree of difficulty of movable mould base 201.

The movable mold device 200 further comprises a first positioning column 206, the first positioning column 206 is fixed with the first pressing member 204, and the first positioning column 206 is obliquely arranged. When the movable die apparatus 200 and the fixed die apparatus 100 are clamped, the first positioning post 206 is inserted into the first positioning hole 107b, and the first positioning hole 107b and the first positioning post 206 can be kept engaged with each other as the first slider 107 moves toward the first cavity 105, and at the same time, the first positioning post applies a pushing force to the first slider 107.

The movable die device 200 further comprises a second isolation seat 207 and a second extrusion component 208 with an extrusion conical surface, the second isolation seat 207 is located in the middle of the movable die holder 201 and connected with the movable die holder 201, and the second extrusion component 208 is arranged on the second isolation seat 207 and located on the other side of the first male die 202. In this embodiment, the number of the first male dies 202 is two, and the second separator 207 is located between the two first male dies 202.

The tapered surface on the second pressing part 208 is matched with the second slide block 112, and with the continuous feeding of the movable die device 200, the second slide block 112 is pushed by the first pressing part 204 and moves towards the first cavity 105, so that the abutting part 113 on the second slide block 112 is matched with the second insert 115 assembled in the first cavity 105 to form a complete cavity of the lamp housing a.

The movable mold device 200 further comprises a second positioning column 209, the second positioning column 209 is fixed with the second pressing component 208, and the second positioning column 209 is obliquely arranged. When the movable die apparatus 200 and the fixed die apparatus 100 are clamped, the second positioning posts 209 are inserted into the second positioning holes 112b of the second slider 112, and the second positioning holes 112b and the second positioning posts 209 can be kept engaged with each other as the second slider 112 moves toward the first cavity 105, and at the same time, the second positioning posts 209 apply a pushing force to the second slider 112.

The fixed mold device 100 is provided with a plurality of first mounting holes 101, the ejection mechanism 300 comprises a bottom plate 301, a top column 302, a plurality of first ejector rods 303 matched with the bottom of the lamp housing a, the bottom plate 301 is provided with a plurality of abdicating holes 301a, the ejection mechanism 300 further comprises a first movable plate 304, a second movable plate 305, a plurality of second ejector rods 306 matched with one side of the boss of the lamp housing a, the first movable plate 304 and the second movable plate 305 are superposed on the bottom plate 301, the first movable plate 304 and the second movable plate 305 are both provided with through holes, one end of the top column 302 passes through the through holes on the first movable plate 304 and the second movable plate 305 and then is fixed with the bottom plate 301, the other end of the top column 302 is matched with the middle part of the fixed mold device 100, the second movable plate 305 is provided with an assembly hole 305a, one end of the first ejector rods 303 and the second ejector rods 306 are respectively matched with the first movable plate 304 and/or the second movable plate 305, the assembly hole 305a is a stepped hole, after the first ejector rod 303 and the second ejector rod 306 respectively pass through the assembly hole 305a, the axial end surfaces of the first ejector rod 303 and the second ejector rod 306 are abutted against the second movable plate 305, the fixed die device 100 is further provided with a plurality of second mounting holes 102, the other end of the first ejector rod 303 is matched with the first mounting hole 101, and the other end of the second ejector rod 306 is matched with the second mounting holes 102.

According to the utility model, the second ejector rod 306 applies ejection acting force to one side of the boss of the lamp housing A, and the ejection acting force formed by the first ejector rod 303 to the bottom of the lamp housing A is added, so that the lamp housing A is stressed in multiple aspects in the ejection process, and the demolding is easier.

The ejection mechanism 300 further includes a third ejector pin engaged with the other side of the boss of the lamp housing a, after one end of the third ejector pin is connected to the first movable plate 304 or the second movable plate 305, the fixed mold device 100 is provided with a third mounting hole 103 inclined to the axial direction of the fixed mold device 100, the third ejector pin is arranged inclined to the fixed mold device 100 and engaged with the third mounting hole 103, and applies an oblique thrust to the lamp housing a when the lamp housing a is demolded.

The third ejector rod comprises a hinge seat 307 and a movable rod 308, one end of the movable rod 308 is hinged to the hinge seat 307, a protrusion 309 is arranged on the side wall of the other end of the movable rod 308, the third mounting hole 103 is a step hole, the protrusion 309 is matched with a large-diameter hole of the third mounting hole 103, and a first groove 310 matched with the other side of the boss of the lamp housing A is arranged at one end of the protrusion 309.

The hinge base 307 comprises a connecting base 307a and a hinge block 307b, a groove body 307c is arranged on the connecting base 307a, a limit portion 307d located on the side wall of the groove body 307c is arranged on the connecting base 307a, a matching groove is formed between the limit portion 307d and the groove bottom of the groove body 307c, the hinge block 307b is located in the matching groove, and the hinge block 307b is hinged to the third ejector rod.

The second movable plate 305 is provided with a mounting hole 305a, and one end of the first top bar 303 and the second top bar 306 is matched with the mounting hole 305a and then abutted against the first movable plate 304.

The ejection mechanism 300 further includes an ejection limiting post 311, one end of the ejection limiting post 311 is fixed to the second movable plate 305, the other end of the ejection limiting post 311 is a free end, and the height of the ejection limiting post 311 is smaller than the height of the ejection post 302.

The ejection mechanism 300 further includes a reset mechanism, the reset mechanism includes a column 312 and a spring 313, one end of the column 312 is fixed to the second movable plate 305, the other end of the column 312 is fixed to the stationary mold device 100, the spring 313 is sleeved on the column 312, one end of the spring 313 abuts against the second movable plate 305, and the other end of the spring 313 abuts against the second movable plate 305.

The ejection mechanism 300 further includes two first supports 314, one end of each first support 314 is fixed to the bottom plate 301, and the other end of each first support 314 is fixed to the fixed mold device 100, in this embodiment, a space is formed between the two first supports 314, the first movable plate 304 and the second movable plate 305 are in clearance fit in the space, and the first movable plate 304 and the second movable plate 305 are limited by the first supports 314.

The working process of the ejection mechanism 300 is as follows: a driving means (not shown) is engaged with the first flap 304 through the escape hole 301a, and the driving means is composed of a cylinder and a plate-shaped member having a column head. When the driving device works, power is applied to the first movable plate 304, so that the first movable plate 304 and the second movable plate 305 move, the first ejector rod 303, the second ejector rod 306 and the movable rod 308 move, and the first ejector rod 303, the second ejector rod 306 and the movable rod 308 apply ejection acting force to the lamp housing a which is subjected to injection molding, so that the lamp housing a is separated from the fixed die device 100.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and the patent scope of the present invention is not limited; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; in addition, the technical scheme of the utility model is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the utility model.

Claims (5)

1. The lamp shell ejection mechanism comprises a fixed die device (100), a bottom plate (301), an ejection column (302) and a plurality of first ejector rods (303) matched with the bottom of the lamp shell, wherein the fixed die device (100) is provided with a plurality of first mounting holes (101), the bottom plate (301) is provided with a plurality of abdicating holes (301a), the lamp shell ejection mechanism is characterized in that the ejection mechanism (300) further comprises a first movable plate (304), a second movable plate (305) and a plurality of second ejector rods (306) matched with one side of a boss on the circumferential surface of the lamp shell (A), the first movable plate (304) and the second movable plate (305) are superposed and arranged on the bottom plate (301), through holes are formed in the first movable plate (304) and the second movable plate (305), one end of the ejection column (302) penetrates through the through holes in the first movable plate (304) and the second movable plate (305) and then is fixed with the bottom plate (301), and the other end of the ejection column (302) is matched with the middle of the fixed die device (100), the second movable plate (305) is provided with an assembling hole (305a), one end of the first ejector rod (303) and one end of the second ejector rod (306) are respectively matched with the first movable plate (304) and/or the second movable plate (305), the fixed die device (100) is further provided with a plurality of second mounting holes (102), the other end of the first ejector rod (303) is matched with the first mounting hole (101), and the other end of the second ejector rod (306) is matched with the second mounting hole (102).

2. The lamp housing ejection mechanism according to claim 1, wherein the ejection mechanism (300) further includes a third ejector pin engaged with the other side of the lamp housing boss, one end of the third ejector pin is connected to the first movable plate (304) or the second movable plate (305), the fixed mold device (100) is provided with a third mounting hole (103) inclined to the axial direction of the fixed mold device (100), and the third ejector pin is arranged inclined to the fixed mold device (100) and engaged with the third mounting hole (103), so as to apply an oblique pushing force to the lamp housing when the lamp housing is demolded.

3. The lamp housing ejection mechanism according to claim 2, wherein the third ejector rod includes a hinge base (307) and a movable rod (308), one end of the movable rod (308) is hinged to the hinge base (307), a protrusion (309) is disposed on a side wall of the other end of the movable rod (308), the third mounting hole (103) is a stepped hole, the protrusion (309) is matched with a large-diameter hole of the third mounting hole (103), and a first groove (310) matched with the other side of a boss on the circumferential surface of the lamp housing (a) is disposed at one end of the protrusion (309).

4. The lamp housing ejection mechanism according to claim 3, wherein the hinge base (307) includes a connection base (307a) and a hinge block (307b), a groove body (307c) is disposed on the connection base (307a), a limiting portion (307d) disposed on a side wall of the groove body (307c) is disposed on the connection base (307a), a matching groove is formed between the limiting portion (307d) and a groove bottom of the groove body (307c), the hinge block (307b) is disposed in the matching groove, and the hinge block (307b) is hinged to the third ejector rod.

5. The lamp housing ejection mechanism according to claim 1, wherein the second movable plate (305) is provided with a mounting hole (305a), and one end of the first lift pin (303) and one end of the second lift pin (306) are abutted against the first movable plate (304) after being engaged with the mounting hole (305 a).

Images