Production mold for plastic lamp housing

Abstract

The utility model discloses a plastic lamp housing production mold which comprises a bottom box, supports fixedly installed at the upper end of the bottom box, a sliding base installed between the supports in a sliding mode, a pressing block fixedly installed at the lower end of the sliding base, an air cylinder installed at the upper ends of the supports and used for driving the sliding base to move, and a hollow rotating rod installed between the supports in a rotating mode. A mold base is fixed to the position, corresponding to the pressing block, of the rotating rod, the pressing block is movably connected with the mold base, a steel wire rope is connected between the sliding base and the rotating rod, the sliding base pulls the rotating rod to rotate when rising, a special-shaped rod is movably installed in the rotating rod and fixedly connected with the support, and demolding rods are movably installed in the rotating rod and the mold base. According to the automatic demolding mechanism, the rotating rod is driven to rotate through the sliding seat, the demolding rod ejects a formed part out of the mold seat while the rotating rod rotates, and automatic demolding of the formed part is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic lamp housing production, in particular to a production mould for a plastic lamp housing. Background Art

[0002] Lamps make people's lives brighter, more vivid, and more colorful. The lamp housings in lamp accessories often require stamping during the preparation process. A press is used to apply pressure to the material using a mold installed on a press, causing it to separate or plastically deform, thereby obtaining the desired parts. After the stamping is completed, the temperature of the material in the existing lamp housing forming mold is relatively high. Existing processes often use manual prying to separate the material from the mold, which can damage the material surface and result in a high rate of defective products.

[0003] For example, the patent with application number: 202220009365.0 discloses a lamp housing stamping mold that is easy to maintain, including a base plate, side plates are provided on both sides of the upper end of the base plate, vertical poles are fixed on the upper ends of the side plates, top plates are fixed on the vertical poles on both sides, a connecting plate is provided below the top plate, a pressure block is fixed on the connecting plate, a mold is provided below the pressure block, a cylinder is fixed on both sides of the lower end of the top plate, the power shaft of the cylinder is connected to the slide plate, the two sides of the slide plate are slidably set on the vertical poles, the screw on the connecting plate passes through the slide plate and is fixed by a nut, which is convenient for installing and fixing the pressure block on the connecting plate, and the operation is simple and convenient; rotate the turn plate 180 degrees to take out the lamp housing molded part in the mold, insert the insert into the slot during stamping to fix the position of the turn plate.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the above-mentioned patent manually rotates the turning plate to make the mold face downward, thereby facilitating the removal of the lampshade molded parts in the mold. However, in actual use, the molded parts are adhered to the mold and are difficult to remove, and still need to be manually removed. The labor cost is high and the practicality is not strong. Therefore, a production mold for plastic lamp shells is proposed to solve the problem that plastic lamp shell molded parts cannot be automatically demolded and improve production efficiency. Utility Model Content

[0005] In order to solve the problems in the above background technology, the utility model provides a production mold for a plastic lamp housing.

[0006] The utility model adopts the following technical solution: a production mold for a plastic lamp shell, comprising a bottom box, a bracket fixedly installed on the upper end of the bottom box, a slide seat slidably installed between the brackets, a pressure block fixedly installed at the lower end of the slide seat, and a cylinder for driving the slide seat to move is also installed on the upper end of the bracket, a hollow rotating rod is rotatably installed between the brackets, a mold seat is fixed on the rotating rod at a position corresponding to the pressure block, the pressure block is movably connected to the mold seat, a steel wire rope is connected between the slide seat and the rotating rod, and when the slide rises, the rotating rod is pulled to rotate; a special-shaped rod is movably installed in the rotating rod, the special-shaped rod is fixedly connected to the bracket, and a demolding rod is movably installed in the rotating rod and the mold seat, the demolding rod contacts the outer wall of the special-shaped rod, and when the rotating rod rotates, the special-shaped rod pushes the demolding rod to extend from the bottom wall of the mold seat.

[0007] As a preferred embodiment of the present invention, the cross-sectional shape of the special-shaped rod is a solid volute shape.

[0008] As a preferred embodiment of the present invention, fixing rods are installed at both ends of the special-shaped rod, the fixing rods are fixed on the bracket, the outer wall of the fixing rod is sleeved with a torsion spring, and the two ends of the torsion spring are fixedly connected to the fixing rod and the rotating rod respectively.

[0009] As a preferred embodiment of the present invention, the bracket is symmetrically provided with mounting grooves, and the rotating rod is symmetrically fixed with limiting blocks, and the limiting blocks are movably connected to the inner wall of the mounting groove.

[0010] As a preferred embodiment of the present invention, a hard rubber pad is fixed to the side of the limiting block that contacts the inner wall of the installation groove, and the rubber pad contacts the inner wall of the installation groove.

[0011] As a preferred embodiment of the present invention, the inner wall of the rotating rod is provided with a movable groove, the demolding rod is movably installed in the movable groove, the outer wall of the demolding rod is also sleeved with a spring, the spring is fixedly connected to the demolding rod and the inner wall of the movable groove, and when the demolding rod is in the retracted state, the height of the demolding rod is flush with the bottom wall of the mold base.

[0012] As a preferred embodiment of the present invention, a roller is rotatably mounted on one end of the demoulding rod close to the special-shaped rod, and the roller is in contact with the outer wall of the special-shaped rod.

[0013] As a preferred embodiment of the present invention, the edge of the end of the demoulding rod close to the mold base is provided with a curved surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model uses a cylinder to push the slide downward, so that the slide drives the pressure block into the mold base to realize the stamping molding of the plastic lamp shell. When the stamping is completed, the cylinder drives the slide upward, and the rotating rod is rotated by pulling the wire rope, so that the special-shaped part pushes the demoulding rod to extend from the bottom wall of the mold base, thereby ejecting the molded part from the mold base, realizing automatic demoulding of the plastic molded part and improving production efficiency.

[0016] 2. The utility model drives the mold base to rotate downward by the rotating rod, so that the opening of the mold base faces downward, further facilitating the molded parts in the mold base to fall into the bottom box for collection, and utilizes the reset of the slide to drive the rotating rod to rotate for demoulding, which has a reasonable structure and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the rotating rod and mold base structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the disassembly of the rotating rod and the special-shaped rod structure of the utility model;

[0020] Figure 4 This is a schematic front cross-sectional view of the support structure of the present invention;

[0021] Figure 5 For the utility model Figure 5 A schematic diagram of the enlarged structure of area A;

[0022] Figure 6 It is a side cross-sectional schematic diagram of the bracket structure of the present invention.

[0023] In the figure: 1. Base box; 11. Bracket; 111. Mounting slot; 12. Slide; 121. Press block; 122. Cylinder; 123. Wire rope; 13. Special-shaped rod; 131. Fixed rod; 132. Torsion spring; 2. Rotating rod; 21. Mold base; 22. Demolding rod; 221. Spring; 23. Movable slot; 24. Limit block. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] Example 1:

[0028] See also Figure 1-6 The utility model provides a production mold for a plastic lamp shell, including a bottom box 1, a bracket 11 is fixedly installed on the upper end of the bottom box 1, a slide 12 is slidably installed between the brackets 11, a pressure block 121 is fixedly installed at the lower end of the slide 12, and a cylinder 122 for driving the slide 12 to move is also installed on the upper end of the bracket 11, a hollow rotating rod 2 is rotatably installed between the brackets 11, a mold base 21 is fixed on the rotating rod 2 at a position corresponding to the pressure block 121, the pressure block 121 is movably connected to the mold base 21, a steel wire rope 123 is connected between the slide 12 and the rotating rod 2, when the slide 12 rises, the rotating rod 2 is pulled to rotate, and a special-shaped rod 13 is movably installed in the rotating rod 2, The special-shaped rod 13 is fixedly connected to the bracket 11, and a demoulding rod 22 is movably installed in the rotating rod 2 and the mold base 21. The demoulding rod 22 contacts the outer wall of the special-shaped rod 13. When the rotating rod 2 rotates, the special-shaped rod 13 pushes the demoulding rod 22 to extend from the bottom wall of the mold base 21, and pushes the slide 12 downward through the cylinder 122, so that the slide 12 drives the pressure block 121 to enter the mold base 21 to realize the stamping molding of the plastic lamp shell. When the stamping is completed, the cylinder 122 drives the slide 12 to move upward, and pulls the rotating rod 2 to rotate through the wire rope 123, so that the special-shaped part pushes the demoulding rod 22 to extend from the bottom wall of the mold base 21, thereby ejecting the molded part from the mold base 21, and realizing automatic demoulding of the plastic molded part.

[0029] Please pay attention to Figure 2-3 The cross-sectional shape of the special-shaped rod 13 is a solid volute. Through this design, when the rotating rod 2 rotates, the special-shaped rod 13 pushes the demoulding rod 22 to move outward and extend from the bottom wall of the mold base 21.

[0030] Please pay attention to Figure 3-6 A fixing rod 131 is installed at both ends of the special-shaped rod 13, and the fixing rod 131 is fixed on the bracket 11. A torsion spring 132 is sleeved on the outer wall of the fixing rod 131, and the two ends of the torsion spring 132 are fixedly connected to the fixing rod 131 and the rotating rod 2 respectively. The torsion spring 132 enables the rotating rod 2 to automatically reset after rotation.

[0031] Please pay attention to Figure 3-6 The bracket 11 is symmetrically provided with mounting grooves 111, and the rotating rod 2 is symmetrically fixed with limit blocks 24, which are movably connected to the inner wall of the mounting groove 111. The limit blocks 24 limit the rotating rod 2 to prevent the rotating rod 2 from rotating too much due to the pull of the torsion spring 132, causing the mold seat 21 to deviate. A hard rubber pad is fixed on the side of the limit block 24 that contacts the inner wall of the mounting groove 111. The rubber pad contacts the inner wall of the mounting groove 111, and the limit block 24 is protected by the rubber pad, thereby extending the service life of the limit block 24 and reducing the noise generated by the collision between the limit block 24 and the inner wall of the mounting groove 111.

[0032] Please pay attention to Figure 2 The inner wall of the rotating rod 2 is provided with a movable groove 23, and the demoulding rod 22 is movably installed in the movable groove 23. The outer wall of the demoulding rod 22 is also sleeved with a spring 221, and the spring 221 is fixedly connected to the demoulding rod 22 and the inner wall of the movable groove 23. When the demoulding rod 22 is in the storage state, the height of the demoulding rod 22 is flush with the bottom wall of the mold base 21. The spring 221 pushes the demoulding rod 22 so that the demoulding rod 22 can automatically reset after ejecting the molded part. The height of the demoulding rod 22 is flush with the bottom wall of the mold base 21 to reduce the influence of the demoulding rod 22 on the stamping of the plastic molded part.

[0033] Please pay attention to Figure 2 The demoulding rod 22 is rotatably mounted with a roller at one end close to the special-shaped rod 13, and the roller contacts the outer wall of the special-shaped rod 13. The roller reduces the friction between the demoulding rod 22 and the special-shaped rod 13, thereby extending the service life of the demoulding rod 22 and the special-shaped rod 13. The edge of the end of the demoulding rod 22 close to the mold base 21 is provided with a curved surface to prevent the demoulding rod 22 from scratching the plastic molded part, thereby improving the yield rate of the molded part.

[0034] The working principle of the first embodiment of the present invention is as follows:

[0035] When in use, the cylinder 122 pushes the slide 12 to move downward, and the slide 12 drives the pressure block 121 to move toward the mold base 21 so that the pressure block 121 is inserted into the mold base 21 to stamp the lamp housing. After the stamping is completed, the cylinder 122 drives the slide 12 and the pressure block 121 to move upward. After the pressure block 121 leaves the mold base 21, the slide 12 continues to move upward and pulls the wire rope 123. The wire rope 123 pulls the rotating rod 2 to rotate. When the rotating rod 2 rotates, the torsion spring 132 is tightened, so that the rotating rod 2 drives the mold base 21 to rotate downward. When the rotating rod 2 rotates, the special-shaped rod 13 The demoulding rod 22 in the rotating rod 2 is pushed to move outward, so that the demoulding rod 22 extends from the inner wall of the mold base 21, thereby ejecting the lamp housing molded part in the mold base 21, and the lamp housing molded part falls into the bottom box 1 for collection, realizing automatic demoulding of the molded part; and when the lamp housing needs to be stamped again, the cylinder 122 drives the slide 12 and the pressing block 121 to move downward, and at the same time relaxes the pulling of the wire rope 123 on the rotating rod 2, and the rotating rod 2 automatically resets under the rebound of the torsion spring 132. The reset of the rotating rod 2 drives the mold base 21 to reset toward the pressing block 121, which is convenient for stamping again.

[0036] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A production mold for a plastic lamp housing, characterized by: The invention comprises a bottom box (1), wherein a bracket (11) is fixedly installed on the upper end of the bottom box (1), a slide seat (12) is slidably installed between the brackets (11), a pressure block (121) is fixedly installed on the lower end of the slide seat (12), and a cylinder (122) for driving the slide seat (12) to move is also installed on the upper end of the bracket (11), a hollow rotating rod (2) is rotatably installed between the brackets (11), a mold seat (21) is fixed on the rotating rod (2) at a position corresponding to the pressure block (121), the pressure block (121) is movably connected to the mold seat (21), a steel wire rope (123) is connected between the slide seat (12) and the rotating rod (2), and when the slide seat (12) rises, the rotating rod (2) is pulled to rotate; A special-shaped rod (13) is movably installed in the rotating rod (2), and the special-shaped rod (13) is fixedly connected to the bracket (11). A demoulding rod (22) is movably installed in the rotating rod (2) and the mold base (21), and the demoulding rod (22) contacts the outer wall of the special-shaped rod (13). When the rotating rod (2) rotates, the special-shaped rod (13) pushes the demoulding rod (22) to extend from the bottom wall of the mold base (21).

2. The production mold for a plastic lamp housing according to claim 1, characterized in that: The cross-sectional shape of the special-shaped rod (13) is a solid volute shape.

3. The production mold for a plastic lamp housing according to claim 2, characterized in that: Fixed rods (131) are installed at both ends of the special-shaped rod (13), and the fixed rod (131) is fixed on the bracket (11). The outer wall of the fixed rod (131) is provided with a torsion spring (132), and the two ends of the torsion spring (132) are fixedly connected to the fixed rod (131) and the rotating rod (2) respectively.

4. The production mold for a plastic lamp housing according to claim 3, characterized in that: The bracket (11) is symmetrically provided with a mounting groove (111), and a limiting block (24) is symmetrically fixed on the rotating rod (2), and the limiting block (24) is movably connected to the inner wall of the mounting groove (111).

5. The production mold for a plastic lamp housing according to claim 4, characterized in that: A hard rubber pad is fixed to the side of the limiting block (24) that contacts the inner wall of the installation groove (111), and the rubber pad contacts the inner wall of the installation groove (111).

6. A production mold for a plastic lamp housing according to any one of claims 1 to 5, characterized in that: The inner wall of the rotating rod (2) is provided with a movable groove (23), the demoulding rod (22) is movably installed in the movable groove (23), the outer wall of the demoulding rod (22) is also sleeved with a spring (221), the spring (221) is fixedly connected to the demoulding rod (22) and the inner wall of the movable groove (23), and when the demoulding rod (22) is in the storage state, the height of the demoulding rod (22) is flush with the bottom wall of the mold base (21).

7. The production mold for a plastic lamp housing according to claim 6, characterized in that: A roller is rotatably mounted on one end of the demoulding rod (22) close to the special-shaped rod (13), and the roller contacts the outer wall of the special-shaped rod (13).

8. The production mold for a plastic lamp housing according to claim 7, characterized in that: The edge of the end of the demoulding rod (22) close to the mold base (21) is provided with a curved surface.

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