Household appliance plastic accessory injection molding machine capable of achieving rapid demolding

Abstract

The utility model belongs to the technical field of household appliance accessory production, and particularly discloses a fast demoulding household appliance plastic accessory injection molding machine which comprises a base, an anti-blocking structure, a dispersing barrel, an injection molding funnel and a demoulding assembly are sequentially arranged above the base from top to bottom, and the anti-blocking structure comprises a placing frame. A sieve plate is fixedly connected to the inner wall of the middle of the containing frame, a friction plate used for rolling plastic particles is slidably connected to the surface of the sieve plate, a plurality of tooth blocks matched with sieve holes of the sieve plate in size are arranged at the bottom of the friction plate, and an inclined plate facilitating conveying of the plastic particles is arranged at the bottom of the containing frame. The screw rod is driven to rotate through the positive and negative rotation motor, so that the friction plate moves back and forth on the surface of the sieve plate, large plastic particles are crushed and fall into the dispersion barrel, blockage in the dispersion barrel or an injection molding funnel is avoided, and the injection molding quality and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliance accessory production, in particular to a household appliance plastic accessory injection molding machine of quick demolding. BACKGROUND

[0002] The injection molding machine is a kind of main forming equipment for making various shapes of plastic products by thermoplastic or thermosetting plastic using plastic forming mold, and demolding is a key link in the injection molding process, which refers to the process of smoothly taking out the plastic product from the mold cavity after cooling and solidification.

[0003] The screw injection molding machine is the most widely used type in the production of household appliance plastic accessories at present. It transports, compacts, shears, disperses and mixes plastic particles by the rotation and axial movement of screw in the barrel, so that the plastic is uniformly plasticized.

[0004] The existing screw injection molding machine works, because the shape and size of plastic particles are irregular, they are easy to interleave and accumulate during transportation. Especially when some strange-shaped particles are mixed in, they may be stuck in the narrow part of the barrel inlet or conveying pipeline, causing blockage; or the plastic particles absorb moisture in the air, and then form blockage in the barrel inlet or conveying structure, which hinders the normal transportation of subsequent particles, and further affects the quality and rate of injection molding. In view of the above defects or deficiencies in the prior art, a household appliance plastic accessory injection molding machine of quick demolding is proposed. UTILITY MODEL CONTENTS

[0005] In view of the above defects or deficiencies in the prior art, a household appliance plastic accessory injection molding machine of quick demolding is proposed.

[0006] In the first aspect, the application provides a household appliance plastic accessory injection molding machine of quick demolding, which comprises a base, and a de-blocking structure, a dispersion barrel, an injection funnel and a demolding assembly are sequentially arranged from top to bottom above the base, the de-blocking structure comprises a placing frame, a sieve plate is fixedly connected to the middle inner wall of the placing frame, a friction plate for rolling plastic particles is slidably connected to the surface of the sieve plate, a plurality of tooth blocks with sizes matching the sieve hole size of the sieve plate are arranged at the bottom of the friction plate, and a inclined plate for facilitating the transportation of plastic particles is arranged at the bottom of the placing frame.

[0007] According to the technical scheme provided by the embodiment of the application, the center of the dispersion barrel is provided with a rotating rod, the two side walls of the rotating rod are fixedly connected with L-shaped connecting plates, a plurality of connecting blocks with equal intervals are installed on the side wall of the connecting plate close to the rotating rod, and a spiral conveying piece is coaxially connected to the bottom end of the rotating rod.

[0008] According to the technical scheme provided in the embodiment of the application, the spiral conveying piece extends to the bottom end of the injection funnel, a first bevel gear is fixedly sleeved at the bottom end of the spiral conveying piece, a second bevel gear is vertically meshed and connected with the first bevel gear, a transmission rod is fixedly sleeved at the inner wall of the second bevel gear, and a servo motor is coaxially connected to the other end of the transmission rod.

[0009] According to the technical scheme provided in the embodiment of the application, the bottom surface of the injection funnel is fixedly connected with a baffle, an injection pipe is arranged at the surface center of the baffle, the injection pipe is in communication with the inside of the injection funnel, and an upper injection mold is fixedly connected to the baffle through a connecting rod.

[0010] According to the technical scheme provided in the embodiment of the application, a sliding groove is arranged on the surface of the sieve plate, a sliding block is fixedly connected to the bottom end of the friction plate, a lead screw is threadedly connected to the sliding block, the lead screw penetrates through the side wall of the placing frame and is coaxially connected with a reversible motor.

[0011] According to the technical scheme provided in the embodiment of the application, the demolding assembly comprises two vertical plates oppositely arranged on the surface of the base, the same lower injection mold matched with the upper injection mold is slidingly connected to the two vertical plates, the side wall of each of the two vertical plates opposite to each other is provided with a receiving groove, the side wall of one of the vertical plates is provided with a mounting block for mounting the servo motor, and the top surface of the vertical plate close to the mounting block is fixedly connected with a frequency conversion motor through bolts.

[0012] According to the technical scheme provided in the embodiment of the application, the output shaft of the frequency conversion motor is coaxially and key-connected with a threaded rod, one end of the lower injection mold is threadedly connected with the threaded rod, the vertical plate away from the frequency conversion motor is fixedly connected with a sliding rod, and the end of the lower injection mold away from the threaded rod is slidingly connected with the sliding rod.

[0013] In summary, the technical scheme specifically discloses a household appliance plastic accessory injection molding machine with rapid demolding, which comprises an anti-blocking structure, a dispersion barrel, an injection funnel and a demolding assembly, etc. The reversible motor drives the lead screw to rotate, so that the friction plate moves back and forth on the surface of the sieve plate, thereby crushing the large plastic particles into the dispersion barrel, avoiding blockage in the dispersion barrel or the injection funnel, and improving the quality and efficiency of injection molding. The frequency conversion motor drives the lower injection mold to move up and down, thereby rapidly performing the injection demolding process, without considering the problem of falling of the household appliance plastic accessory due to its own gravity, and improving the efficiency of injection molding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0015] Figure 1 It is the whole structure schematic view of the utility model;

[0016] Figure 2 It is the anti-blocking structure sectional view in the utility model;

[0017] Figure 3 It is the local structure sectional view in the utility model;

[0018] Figure 4 It is the demoulding assembly structure explosion view in the utility model.

[0019] In the drawing: 1, base; 2, anti-blocking structure; 21, placing frame; 22, inclined plate; 23, sieve plate; 231, sliding groove; 24, friction plate; 241, sliding block; 25, screw rod; 26, forward and reverse motor; 3, dispersion bucket; 31, rotating rod; 32, connecting plate; 33, connecting block; 34, spiral conveying piece; 4, injection funnel; 41, first bevel gear; 42, second bevel gear; 43, transmission rod; 44, servo motor; 45, baffle; 46, injection tube; 47, upper injection mold; 5, demoulding assembly; 51, vertical plate; 510, containing groove; 52, threaded rod; 53, sliding rod; 54, lower injection mold; 55, variable frequency motor; 56, mounting block. DETAILED DESCRIPTION

[0020] The application will be further described below in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description.

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] Please refer to Figures 1-4 A quick demoulding household appliance plastic accessory injection molding machine, including base 1, the upper portion of base 1 is sequentially provided with anti-blocking structure 2, dispersion bucket 3, injection funnel 4 and demoulding assembly 5 from top to bottom, anti-blocking structure 2 includes placing frame 21, the inner wall of the middle part of placing frame 21 is fixedly connected with sieve plate 23, the surface of sieve plate 23 is slidably connected with friction plate 24 for rolling and pressing plastic particles, the bottom of friction plate 24 is provided with a plurality of tooth blocks with size adapted to the size of sieve hole of sieve plate 23, the bottom of placing frame 21 is provided with inclined plate 22 for facilitating the conveying of plastic particles, by moving friction plate 24 back and forth on the surface of sieve plate 23, the lumpy plastic particles are crushed and fall into dispersion bucket 3, avoiding clogging in dispersion bucket 3 or injection funnel 4, improving the quality and efficiency of injection molding.

[0023] In the embodiment, the center of the dispersion barrel 3 is provided with a rotating rod 31, the two side walls of the rotating rod 31 are fixedly connected with L-shaped connecting plates 32, a plurality of connecting blocks 33 with equal intervals are mounted on the side wall of the connecting plate 32 close to the rotating rod 31, the bottom end of the rotating rod 31 is coaxially connected with a spiral conveying piece 34, the high-speed rotation of the rotating rod 31 drives the connecting plate 32 and the connecting block 33, so that the plastic particles are dispersed and the falling speed is slowed down, thereby facilitating the processing of the plastic particles and improving the quality of injection molding.

[0024] Further, the spiral conveying piece 34 extends to the bottom end of the injection funnel 4, the bottom end of the spiral conveying piece 34 is fixedly sleeved with a first bevel gear 41, the first bevel gear 41 is vertically meshed with a second bevel gear 42, the inner wall of the second bevel gear 42 is fixedly sleeved with a transmission rod 43, the other end of the transmission rod 43 is coaxially connected with a servo motor 44, the spiral conveying piece 34 is drivingly connected with the transmission rod 43 through the two bevel gears, so that the servo motor 44 drives the spiral conveying piece 34 and the rotating rod 3 to rotate at the same time, thereby saving power cost.

[0025] Importantly, the bottom surface of the injection funnel 4 is fixedly connected with a baffle 45, the surface center of the baffle 45 is provided with an injection pipe 46, the injection pipe 46 is communicated with the inside of the injection funnel 4, and the lower side of the baffle 45 is fixedly connected with an upper injection mold 47 through a connecting rod, thereby facilitating the normal use of the structure.

[0026] In the embodiment, the surface of the sieve plate 23 is provided with a chute 231, the bottom end of the friction plate 24 is fixedly connected with a sliding block 241, the sliding block 241 is threadedly connected with a lead screw 25, the lead screw 25 penetrates through the side wall of the placing frame 21 and is coaxially connected with a forward and reverse motor 26, thereby facilitating the back-and-forth movement of the friction plate 24 and the crushing treatment of the plastic particles.

[0027] It should be noted that the demolding assembly 5 includes two vertical plates 51 oppositely arranged on the surface of the base 1, the two vertical plates 51 are fixedly connected on the top surface of the base 1 through screws, the two vertical plates 51 are slidingly connected with the same lower injection mold 54 adapted to the upper injection mold 47, the side wall of one of the two vertical plates 51 is provided with a receiving groove 510, the side wall of one of the two vertical plates 51 is provided with a mounting block 56 for mounting the servo motor 44, the top surface of the vertical plate 51 close to the mounting block 56 is fixedly connected with a frequency conversion motor 55 through bolts, when the top end of the lower injection mold 54 and the bottom end of the upper injection mold 47 are in abutment, the protrusions arranged on the surface of the lower injection mold 54 will contact the household appliance plastic parts on the upper injection mold 47, thereby facilitating the workers to take down the parts.

[0028] It needs to be supplemented that the output shaft of the variable frequency motor 55 is coaxially keyed with a threaded rod 52, one end of the lower injection mold 54 is threadedly connected with the threaded rod 52, the vertical plate 51 away from the variable frequency motor 55 is fixedly connected with a sliding rod 53, the end of the lower injection mold 54 away from the threaded rod 52 is slidingly connected with the sliding rod 53, and both ends of the threaded rod 52 are rotatably connected with the inner wall of the accommodating groove 510 through bearings, so as to facilitate normal use of the structure.

[0029] Working principle: when using the quick demolding household appliance plastic accessory injection molding machine, the user first pours the plastic particles into the placing frame 21, the friction plate 24 moves back and forth on the surface of the sieve plate 23 to crush the plastic particles, and then the plastic particles will slide from the inclined plate 22 to the dispersion barrel 3, the rotating rod 31 in the dispersion barrel 3 drives the connecting plate 32 and the connecting block 33 to rotate at high speed, so that the plastic particles are dispersed and then transported by the spiral conveying piece 34, and then injected into the upper injection mold 47 from the injection pipe 46, and then the position of the lower injection mold 54 can be adjusted.

[0030] The above description is only the preferred embodiment of the application and the explanation of the applied technical principles. It should be understood by those skilled in the art that the utility model range involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and also covers other technical solutions formed by the combination of the above technical features or equivalent features without departing from the utility model concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A rapid demolding injection molding machine for plastic parts of household appliances comprising a base (1), characterized in that: The upper of the base (1) is sequentially provided with an anti-blocking structure (2), a dispersion barrel (3), an injection funnel (4) and a demolding assembly (5) from top to bottom, the anti-blocking structure (2) comprises a placing frame (21), the middle inner wall of the placing frame (21) is fixedly connected with a sieve plate (23), the surface of the sieve plate (23) is slidably connected with a friction plate (24) for rolling and pressing plastic particles, the bottom of the friction plate (24) is provided with a plurality of tooth blocks with sizes matching the sieve hole size of the sieve plate (23), and the bottom of the placing frame (21) is provided with an inclined plate (22) facilitating the conveying of plastic particles.

2. The rapid demolding appliance plastic fitting injection molding machine according to claim 1, characterized in that: The center of the dispersion barrel (3) is provided with a rotating rod (31), the two side walls of the rotating rod (31) are fixedly connected with L-shaped connecting plates (32), the side wall of the connecting plate (32) close to the rotating rod (31) is provided with a plurality of connecting blocks (33) with equal intervals, and the bottom end of the rotating rod (31) is coaxially connected with a spiral conveying piece (34).

3. The rapid demolding appliance plastic fitting injection molding machine according to claim 2, characterized in that: The spiral conveying piece (34) extends to the bottom end of the injection funnel (4), the bottom end of the spiral conveying piece (34) is fixedly sleeved with a first bevel gear (41), the first bevel gear (41) is vertically meshed with a second bevel gear (42), the inner wall of the second bevel gear (42) is fixedly sleeved with a transmission rod (43), and the other end of the transmission rod (43) is coaxially connected with a servo motor (44).

4. The rapid demolding appliance plastic fitting injection molding machine according to claim 3, characterized in that: The bottom surface of the injection funnel (4) is fixedly connected with a baffle (45), the surface center of the baffle (45) is provided with an injection pipe (46), the injection pipe (46) is communicated with the inside of the injection funnel (4), and the lower side of the baffle (45) is fixedly connected with an upper injection mold (47) through a connecting rod.

5. The rapid demolding appliance plastic fitting injection molding machine according to claim 1, characterized in that: The surface of the sieve plate (23) is provided with a sliding groove (231), the bottom end of the friction plate (24) is fixedly connected with a sliding block (241), the sliding block (241) is threadedly connected with a lead screw (25), and the lead screw (25) penetrates through the side wall of the placing frame (21) and is coaxially connected with a forward and reverse motor (26).

6. The rapid demolding appliance plastic fitting injection molding machine of claim 4, wherein: The demolding assembly (5) comprises two vertical plates (51) oppositely arranged on the surface of the base (1), the two vertical plates (51) are slidably connected with the same lower injection mold (54) matched with the upper injection mold (47), the side wall of each of the two vertical plates (51) is provided with a receiving groove (510), one side wall of one of the vertical plates (51) is provided with a mounting block (56) for mounting the servo motor (44), and the top surface of the vertical plate (51) close to the mounting block (56) is fixedly connected with a variable frequency motor (55) through bolts.

7. The quick-release, appliance-plastic- fitting injection-molding machine of claim 6, wherein: The output shaft of the variable frequency motor (55) is coaxially keyed connected with a threaded rod (52), one end of the lower injection mold (54) is threadedly connected with the threaded rod (52), the vertical plate (51) away from the variable frequency motor (55) is fixedly connected with a sliding rod (53), and the end of the lower injection mold (54) away from the threaded rod (52) is slidably connected with the sliding rod (53).

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