Injection mold for plastic-clad steel wall switch base

Abstract

An injection mold of a plastic-clad steel wall switch base comprises a front mold frame bottom plate, a front mold frame, a rear mold frame, an ejector pin fixing plate and a rear mold frame bottom plate, a rear mold core is arranged in the rear mold frame, a front mold core matched with the rear mold core is arranged in the front mold frame, and a plurality of forming stations distributed in a rectangular array are arranged in the rear mold core. Positioning columns located at the four corners are arranged on the bottom face of the forming station and used for being arranged on a steel frame arranged in the switch base during injection molding so that the steel frame can be arranged in the forming station, and the upper surface of the steel frame and the upper surface of the rear mold core can be kept on the same level. The switch base has the beneficial effects that the steel frame can be arranged in the switch base when the switch base is subjected to injection molding by the mold, so that the structural strength of the switch base is improved through the steel frame, and the switch base is not easy to damage when in use.

Description

Technical Field

[0001] The utility model relates to the field of panel switch production equipment, in particular to an injection mold for a plastic-coated steel wall switch base. Background Art

[0002] Panel switches are installed on the wall through a base and a panel, and are widely used in homes, factories and other fields.

[0003] The existing switch base is not wrapped with a steel frame, and if the wall thickness of the existing switch base is relatively thin, it will lead to poor product quality and poor strength. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides an injection mold for a plastic-coated steel wall switch base to solve the above-mentioned problems.

[0005] The utility model adopts a technical solution to solve its technical problems: the injection mold of the plastic-coated steel wall switch base comprises a front mold frame bottom plate, a front mold frame, a rear mold frame, a pin fixing plate, and a rear mold frame bottom plate, a rear mold core is arranged in the rear mold frame, a front mold core matched with the rear mold core is arranged in the front mold frame, a plurality of molding stations distributed in a rectangular array are arranged in the rear mold core, and positioning columns located at four corners are arranged on the bottom surface of the molding station, and the positioning columns are used to be arranged on a steel frame arranged in the switch base during injection molding so that the steel frame is placed in the molding station and the upper surface of the steel frame is kept at the same level as the upper surface of the rear mold core.

[0006] For further improvement, an upwardly extending protrusion is provided at the central position in the forming station, and grooves which are recessed inward and extend along the height direction of the protrusion are provided at the central position on both long axis sides of the protrusion, and the lower part of the groove has a lug which is also provided on the bottom surface of the forming station, and an upwardly extending extension block is provided on the lug.

[0007] For further improvement, both short axis sides of the bump are provided with countersunk surfaces extending along the width direction of the bump and combined with the upper surface of the bump to form a step configuration, and the countersunk surfaces are provided with countersunk openings extending downward along the height direction of the bump on the short axis side of the bump, and there are several countersunk openings which are equidistantly distributed along the width direction of the bump.

[0008] For further improvement, a groove located on one side of the short axis side is provided on the bottom surface of the forming station.

[0009] For further improvement, two symmetrically distributed protrusions are arranged on the bottom surface of the forming station and are located on one side of the short axis side and one side of the long axis side of the protrusion.

[0010] For further improvement, a first mounting block is provided at the center position of the two short axis sides and the center position of the two long axis sides of the front mold frame, an insert block is provided on the first mounting block, and a second mounting block is provided at a position on the rear mold frame that matches the first mounting block, and the second mounting block has a slot for the insert block to be inserted therein.

[0011] To be further improved, the slot is divided into a sliding part and a locking part along the combination guide, the insert block and the sliding part are clearance-fitted, and the locking part is interference-fitted.

[0012] Further improvement is made, and the matching clearance between the slot and the insert is gradually reduced along the combination guide.

[0013] The beneficial effects of the utility model are:

[0014] When the mold of the utility model is used for injection molding the switch base, a steel frame can be arranged inside the switch base, so that the structural strength of the switch base is increased by the steel frame, thereby preventing the switch base from being easily damaged during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the rear mold frame of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged schematic diagram of part A;

[0018] Figure 4 For this utility model Figure 2 A partial enlarged schematic diagram of part B;

[0019] Figure 5 It is a structural schematic diagram of the side surface of the utility model;

[0020] Figure 6 For this utility model Figure 5 A partial enlarged schematic diagram of part C in the middle;

[0021] Figure 7 This is a schematic diagram of the structure of the front side of the switch base of the utility model;

[0022] Figure 8 It is a structural schematic diagram of the back side of the switch base of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] Referring to the accompanying drawings: the injection mold of the plastic-coated steel wall switch base includes a front mold frame bottom plate 1, a front mold frame 2, a rear mold frame 3, a pin fixing plate 4, and a rear mold frame bottom plate 5. A rear mold core 6 is arranged in the rear mold frame 3, a front mold core cooperating with the rear mold core 6 is arranged in the front mold frame 2, and a plurality of forming stations 61 distributed in a rectangular array are arranged in the rear mold core 6. Positioning columns 7 located at four corners are arranged on the bottom surface of the forming station 61. The positioning columns 7 are used to be arranged on a steel frame 8 arranged in the switch base during injection molding so that the steel frame 8 is placed in the molding station 61, and the upper surface of the steel frame 8 is kept at the same level as the upper surface of the rear mold core 6. The principle of the utility model is that the rear mold core 6 and the front mold core cooperate with each other to jointly mold the switch base during injection molding, and the rear mold core 6 is concavely set, and the front mold core is convexly set. The molding station 61 is a space for filling the injection molding material during injection molding. In order to have a steel frame 8 in the switch base 30 while injecting the switch base 30, four positioning columns 7 are set in the molding station 61, and then the steel frame 8 is set on the four positioning columns 7, so that the steel frame 8 is maintained in the molding station 61, and the steel frame 8 and the positioning columns 7 are in a close fitting relationship, so that the steel frame 8 can be maintained in a fixed position when on the positioning columns 7 and will not move at will. After the switch base 30 is formed, the steel frame 8 can be placed on the inner surface of the switch base 30, thereby enhancing the strength of the switch base 30. At the same time, the positioning columns 7 are also used to form a wall connection hole 301 for subsequently installing the switch base 30 on the wall.

[0025] A protrusion 8 extending upward is provided at the center position in the forming station 61, and grooves 81 recessed inwardly and extending along the height direction of the protrusion 8 are provided at the center positions of the two long axis sides of the protrusion 8. The lower section of the groove 81 has a lug 81-a which is also provided on the bottom surface of the forming station 61, and an extension block 81-a1 extending upward is provided on the lug 81-a. The purpose of providing the protrusion 8 in the forming station 61 is to allow the middle part of the switch base 30 to be hollowed out when the switch base 30 is obtained, so that the switch base 30 and the button part can pass through conveniently. The groove 81, the lug 81-a, and the extension block 81-a1 are used to form a button part connecting hole 302 for combining the switch base 30 with the button part, that is, the lug 81-a is used to obtain a recessed part 302-a for placing the cap part of the bolt therein, and the extension block 81-a is used to obtain a connecting hole part 302-b for placing the screw part of the bolt therein, so that the switch base 30 and the button part are stably combined.

[0026] Both short-axis sides of the protrusion 8 are provided with a countersunk surface 82 extending along the width direction of the protrusion 8 and combining with the upper surface of the protrusion 8 to form a step configuration. The countersunk surface 82 is provided with a countersunk mouth 82-a extending downward along the height direction of the protrusion 8 on the short-axis side of the protrusion 8. The countersunk mouth 82-a has a plurality of countersunk mouths 82-a and is evenly distributed along the width direction of the protrusion 8. The countersunk surface 82 enables the switch base 30 to obtain a hidden groove 303 for burying the outer frame of the button part after molding. In this way, the switch base 30 and the button part are beautiful as a whole and well hidden when combined, and are convenient to be set on the wall. The countersunk mouth 82-a is used to obtain the internal rib 304 to enhance its structural strength, and the internal rib 304 is also used as a positioning structure combined with the button part, that is, inserted into the button part.

[0027] A groove 61 - a is provided on the bottom surface of the forming station 61 on one side of the short axis side, and the groove 61 - a is used to obtain an external rib 305 to enhance its structural strength.

[0028] Two symmetrically distributed bosses 9 are provided on the bottom surface of the forming station 61, which are located on one side of the short axis side and one side of the long axis side of the protrusion 8. Through such an arrangement, the four sides of the switch base 30 are provided with sockets 306 formed by the bosses 9, and the switch panel is provided with an insertion rod inserted into the socket 306, so that the switch panel can be stably covered on the switch base 30.

[0029] A first mounting block 10 is provided at the center position of the two short axis sides and the center position of the two long axis sides of the front mold frame 2, and an insert block 101 is provided on the first mounting block 10. A second mounting block 20 is provided at a position matching the first mounting block 10 on the rear mold frame 3, and the second mounting block 20 has a slot 201 for the insert block 101 to be inserted therein. The combination of the insert block 101 and the slot 201 ensures the positioning effect when the front mold frame 2 and the rear mold frame 3 are combined, thereby ensuring the stability of the rear mold core 6 and the front mold core when combined, thereby ensuring the quality of the finished product of the switch base 30 obtained by molding.

[0030] The slot 201 is divided into a sliding part 201-a and a locking part 201-b along the combining guide. The insert block 101 and the sliding part 201-a are clearance-fitted, and the locking part 201-b is interference-fitted, which ensures the stability of the combination of the front mold frame 2 and the rear mold frame 3, and can produce a momentary pause during demolding. The pause can prevent the demolding speed from being too fast and affect the demolding effect of the switch base 30.

[0031] The matching clearance between the slot 201 and the insert block 101 gradually decreases along the coupling guide, and the change of the slot width is linear, so that the insertion process is relatively smooth and the jamming phenomenon in the middle of the coupling can be avoided.

[0032] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An injection mold for a plastic-coated steel wall switch base, comprising a front mold base plate (1), a front mold base (2), a rear mold base (3), an ejector pin fixing plate (4), and a rear mold base plate (5), characterized in that: A rear mold core (6) is provided in the rear mold frame (3), a front mold core cooperating with the rear mold core (6) is provided in the front mold frame (2), a plurality of molding stations (61) distributed in a rectangular array are provided in the rear mold core (6), and positioning columns (7) located at four corners are provided on the bottom surface of the molding station (61). The positioning columns (7) are used to be arranged on a steel frame (71) provided in the switch base during injection molding so that the steel frame (71) is placed in the molding station (61) and the upper surface of the steel frame (71) is kept at the same level as the upper surface of the rear mold core (6).

2. The injection mold for the plastic-coated steel wall switch base according to claim 1, characterized in that: An upwardly extending protrusion (8) is provided at a central position within the forming station (61), and grooves (81) that are inwardly recessed and extend in the height direction of the protrusion (8) are provided at central positions on both long axis sides of the protrusion (8), and a lug (81-a) is provided at the lower section of the groove (81) and is simultaneously provided on the bottom surface of the forming station (61), and an upwardly extending extension block (81-a1) is provided on the lug (81-a).

3. The injection mold for the plastic-coated steel wall switch base according to claim 2, characterized in that: Both short-axis sides of the protrusion (8) are provided with a sunken surface (82) extending along the width direction of the protrusion (8) and combined with the upper surface of the protrusion (8) to form a step configuration. The sunken surface (82) is provided with a countersunk groove (82-a) extending downward along the height direction of the protrusion (8) on the short-axis side of the protrusion (8). The countersunk grooves (82-a) are provided in plurality and are equidistantly distributed along the width direction of the protrusion (8).

4. The injection mold for the plastic-coated steel wall switch base according to claim 2, characterized in that: A groove (61-a) located on one side of the short axis is provided on the bottom surface of the forming station (61).

5. The injection mold for the plastic-coated steel wall switch base according to claim 2, characterized in that: Two symmetrically distributed protrusions (9) are provided on the bottom surface of the forming station (61) and are located on one side of the short axis side and one side of the long axis side of the protrusion (8).

6. The injection mold for the plastic-coated steel wall switch base according to claim 1, characterized in that: A first mounting block (10) is provided at the center of both short axis sides and the center of both long axis sides of the front mold frame (2), and an insert block (101) is provided on the first mounting block (10). A second mounting block (20) is provided at a position on the rear mold frame (3) that matches the first mounting block (10), and a slot (201) is provided in the second mounting block (20) for inserting the insert block (101) therein.

7. The injection mold for the plastic-coated steel wall switch base according to claim 6, characterized in that: The slot (201) is divided into a sliding portion (201-a) and a locking portion (201-b) along a coupling guide, the insert (101) and the sliding portion (201-a) are clearance-fitted, and the locking portion (201-b) is interference-fitted.

8. The injection mold for the plastic-coated steel wall switch base according to claim 7, characterized in that: The fitting clearance between the slot (201) and the insert block (101) gradually decreases along the joining guide.

Images