Plastic bucket injection mold

Abstract

The utility model relates to the technical field of plastic bucket production, and provides a plastic bucket injection mold which comprises a base, an air cylinder is fixedly connected to the middle position of the bottom end of the base, the output end of the air cylinder penetrates through the base and is fixedly connected with a sliding plate through a piston rod, and a male mold is fixedly connected to the middle position of the top end of the sliding plate. Vertical rods are fixedly connected to the periphery of the top end of the base, a top cover is fixedly connected to the top ends of the vertical rods, an injection molding pipe is fixedly connected to the middle of the top end of the top cover, a female die is fixedly connected to the middle of the bottom end of the top cover, and the top end of the female die communicates with the bottom end of the injection molding pipe. According to the plastic bucket injection mold, after the female mold and the male mold are separated, the demolding disc can ascend to apply upward force to a plastic bucket formed on the surface of the male mold through the elastic force of the reset spring, demolding is achieved, the situation that the follow-up mold closing precision is affected due to displacement caused by vibration demolding of a traditional male mold is avoided, and the practicability of the plastic bucket injection mold is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic bucket production, specifically, and relates to a plastic bucket injection mold. BACKGROUND

[0002] A plastic bucket is a barrel-shaped container made of plastic, which has the advantages of acid and alkali resistance, corrosion resistance, lightness and easy cleaning, and is therefore widely used in storage, transportation and packaging fields. During the production and processing thereof, molten material is usually injected into a plastic bucket injection mold, cooled and shaped, and then demolded and taken out.

[0003] A plastic bucket injection mold is disclosed in Chinese Patent Publication No. CN215791494U. The document proposes "including a fixed mold plate, the fixed mold plate is vertically provided with guide rods on both sides, the top of the guide rod is horizontally provided with a top plate, a gas cylinder is arranged in the middle of the top plate, the bottom of the gas cylinder is connected with a movable mold plate, the movable mold plate is slidably arranged on the guide rod, a movable mold is arranged below the movable mold plate, a fixed mold is arranged below the movable mold, the fixed mold is matched with the movable mold, the fixed mold is arranged in the mounting groove in the middle of the fixed mold plate, a spring is arranged in the mounting groove, the both ends of the spring are fixedly connected with the fixed mold and the fixed mold plate respectively, an ultrasonic transducer is arranged in the mounting groove, and the ultrasonic transducer is connected with the fixed mold. The utility model is convenient for workers to take down the shaped plastic bucket, saves time and effort, improves production efficiency, and reduces the probability of product damage. The fixed mold vibrates to achieve the demolding purpose by using the ultrasonic transducer. The vibration of the fixed mold affects the firmness and stability of the fixed mold installation, and easily causes the positioning to deviate, affecting the close fitting of the subsequent mold closing, resulting in inconvenience of subsequent mold closing. Therefore, it is necessary to design a plastic bucket injection mold. SUMMARY

[0004] The utility model aims at providing a plastic bucket injection mold, which solves the problem of firmness and stability of the fixed mold installation affected by the vibration of the fixed mold in the related technology, and easily causes the positioning to deviate, affecting the close fitting of the subsequent mold closing.

[0005] The technical scheme of the utility model is as follows:

[0006] A plastic bucket injection mold comprises a base, a gas cylinder is fixedly connected to the middle position of the bottom end of the base, the output end of the gas cylinder penetrates through the base and is fixedly connected with a sliding plate through a piston rod, a male mold is fixedly connected to the middle position of the top end of the sliding plate, a demolding assembly is arranged at the top end of the male mold, a filtering and heat dissipation assembly is arranged on the male mold and the sliding plate, vertical rods are fixedly connected to the periphery of the top end of the base, a top cover is fixedly connected to the top end of the vertical rod, an injection pipe is fixedly connected to the middle position of the top end of the top cover, a female mold is fixedly connected to the middle position of the bottom end of the top cover, and the top end of the female mold is communicated with the bottom end of the injection pipe.

[0007] The demoulding assembly includes a reserved groove, which is opened at the top of the punch, and a fixed groove is opened inside the punch around the bottom end of the reserved groove. The inner bottom wall of the fixed groove is fixedly connected to a telescopic rod, and the top of the telescopic rod is fixedly connected to a slider. A return spring is wound around the surface of the telescopic rod at the bottom end of the slider, and the bottom end of the return spring is fixedly connected to the inner bottom wall of the fixed groove. The top of the slider is fixedly connected to a slide rod extending into the reserved groove, and the top of the slide rod is fixedly connected to a demoulding disk.

[0008] Preferably, a sliding structure is formed between the slider and the interior of the fixing groove, and the slider and the fixing groove are in a cross shape in a top view.

[0009] Preferably, the shape of the demoulding disc and the reserved groove in a top view is O-shaped, and the depth of the reserved groove is greater than the thickness of the demoulding disc.

[0010] Preferably, the filtering and heat dissipation assembly includes a filter box, which is fixedly connected to one side of the front of the sliding plate, the front of the filter box is fixedly connected to a water inlet pipe, one side of the bottom end of the filter box is fixedly connected to a sewage pipe, the other side of the top of the filter box is provided with a mounting groove, the interior of the mounting groove is movably connected to a sealing plate, the bottom end of the sealing plate is fixedly connected to a filter plate extending to the interior of the filter box, the other side of the front of the sliding plate is fixedly connected to a drain pipe, a heat dissipation channel is provided inside the punch, the lower end of one side of the heat dissipation channel is communicated with the back of the filter box, and the upper end of one side of the heat dissipation channel is communicated with the back of the drain pipe.

[0011] Preferably, the heat dissipation channels are distributed in a spiral shape inside the male mold.

[0012] Preferably, the sealing plate is in an inverted convex shape, and a snap-fit ​​structure is formed between the lower end of the sealing plate and the interior of the mounting groove.

[0013] Preferably, a sealing ring is fixedly connected to the lower end of the sealing plate surface, and the shape of the sealing ring in a top view is a Chinese umbilical cord shape.

[0014] Preferably, bolt holes are provided on the top of the filter boxes on both sides of the installation slot, and fixing bolts threadedly matched with the inside of the bolt holes are movably connected to both sides of the top of the sealing plate.

[0015] Preferably, a guide plate is fixedly connected to the inner bottom wall of the filter box on one side of the filter plate, and the guide plate is inclined at an angle of thirty degrees to the vertical direction.

[0016] Preferably, sliding blocks are fixedly connected to both sides of the sliding plate, and a sliding structure is formed between the sliding blocks and the surface of the vertical rod.

[0017] Beneficial effects of the utility model:

[0018] 1、through the setting, when the concave die and the convex die close, the concave die inner top wall convex point makes the stripper plate force drop, so that the slide bar and the slide block drop to compress the fixed groove and the telescopic rod, and after subsequent cooling forming, the concave die and the convex die are demoulded, and then the elastic force of the fixed groove makes the stripper plate rise, an upward force is applied to the cooled and formed plastic bucket, the demoulding between the plastic bucket and the surface of the convex die is realized, the vibration demoulding of the convex die is avoided, the displacement of the convex die is avoided, the tightness of the subsequent concave die and the convex die is improved, and the practicality is improved.

[0019] 2、through the setting of the filter heat dissipation assembly, the external cooling water is filtered by the filter plate, so that impurities are prevented from entering and causing blockage in the heat dissipation channel and affecting the subsequent cooling effect, then the filtered cooling water enters the heat dissipation channel, the spiral heat dissipation channel is used to increase the contact area and contact time of the material between the concave die and the convex die, so that the cooling and forming rate of the material is improved, the efficiency of the plastic bucket cooling and forming process is improved, the filter plate can be opened regularly to discharge the impurities filtered by the filter plate, and the filter plate can be taken out regularly and cleaned thoroughly, so that the blockage is prevented from being serious and affecting the cooling water circulation and conveying rate. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be explained further in detail below by combining with the drawings and specific embodiment.

[0021] Figure 1 It is the whole structure schematic view of the utility model;

[0022] Figure 2 It is the bottom structure schematic view of the utility model;

[0023] Figure 3 It is the whole cross section structure schematic view of the utility model;

[0024] Figure 4 It is the convex die cross section enlarged structure schematic view of the utility model;

[0025] Figure 5 It is the filter box cross section explosion enlarged structure schematic view of the utility model.

[0026] As shown in the figure: 1, injection tube; 2, top cover; 3, concave die; 4, convex die; 5, filter heat dissipation assembly; 501, drain pipe; 502, filter box; 503, water inlet pipe; 504, blowdown pipe; 505, heat dissipation channel; 506, sealing plate; 507, sealing ring; 508, mounting groove; 509, bolt hole; 510, filter plate; 511, guide plate; 512, fixing bolt; 6, base; 7, air cylinder; 8, vertical rod; 9, sliding block; 10, sliding plate; 11, demolding assembly; 1101, demolding disc; 1102, sliding block; 1103, fixing groove; 1104, telescopic rod; 1105, return spring; 1106, sliding rod; 1107, reserved groove. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0028] Embodiment 1

[0029] The preferred embodiment of the plastic bucket injection mold provided by the present application is as follows Figures 1 to 5 As shown in the figure: a plastic bucket injection mold, including base 6, the middle position of the bottom end of base 6 is fixedly connected with air cylinder 7, the output end of air cylinder 7 penetrates through base 6 and is fixedly connected with sliding plate 10 through piston rod, the middle position of the top end of sliding plate 10 is fixedly connected with convex die 4, the top end of convex die 4 is provided with demolding assembly 11, filter heat dissipation assembly 5 is arranged on convex die 4 and sliding plate 10, vertical rod 8 is fixedly connected around the top end of base 6, top cover 2 is fixedly connected with the top end of vertical rod 8, injection tube 1 is fixedly connected with the middle position of the top end of top cover 2, concave die 3 is fixedly connected with the middle position of the bottom end of top cover 2, and the top end of concave die 3 is communicated with the bottom end of injection tube 1.

[0030] The demolding assembly 11 comprises a reserved groove 1107 which is arranged at the top end of the male die 4, a fixing groove 1103 is arranged at the inner bottom of the male die 4 around the bottom end of the reserved groove 1107, the inner bottom wall of the fixing groove 1103 is fixedly connected with an extension rod 1104, the top end of the extension rod 1104 is fixedly connected with a sliding block 1102, the surface of the extension rod 1104 at the bottom end of the sliding block 1102 is wound with a return spring 1105, the bottom end of the return spring 1105 is fixedly connected with the inner bottom wall of the fixing groove 1103, the top end of the sliding block 1102 is fixedly connected with a sliding rod 1106 which extends into the reserved groove 1107, the top end of the sliding rod 1106 is fixedly connected with a demolding disc 1101, after the female die 3 and the male die 4 are separated, the demolding disc 1101 is lifted by the elastic force of the fixing groove 1103, an upward force is applied to the cooled and formed plastic bucket, and the demolding between the plastic bucket and the surface of the male die 4 is realized.

[0031] In the embodiment, the sliding block 1102 and the inside of the fixing groove 1103 form a sliding structure, the sliding block 1102 and the fixing groove 1103 are in the shape of a cross in the top view, the sliding of the sliding block 1102 and the inside of the fixing groove 1103 is utilized, and the stability of the up-and-down sliding of the demolding disc 1101 is improved.

[0032] In the embodiment, the demolding disc 1101 and the reserved groove 1107 are in the shape of O in the top view, the depth of the reserved groove 1107 is greater than the thickness of the demolding disc 1101, the deeper reserved groove 1107 is utilized, the demolding disc 1101 can be lowered to completely enter the reserved groove 1107, and the subsequent polishing amount caused by the excessive protrusion of the demolding disc 1101 is avoided.

[0033] Embodiment 2

[0034] On the basis of the embodiment 1, the preferable embodiment of the plastic bucket injection mold provided by the utility model like Figures 1 to 5As shown: filter heat dissipation assembly 5 includes filter box 502, filter box 502 is fixedly connected to the front side of the sliding plate 10, the front of the filter box 502 is fixedly connected with the water inlet pipe 503, the bottom end of the filter box 502 is fixedly connected with the sewage pipe 504, the top end of the filter box 502 is provided with a mounting groove 508, the inside of the mounting groove 508 is movably connected with a sealing plate 506, the bottom end of the sealing plate 506 is fixedly connected with a filter plate 510 extending into the filter box 502, the other side of the front of the sliding plate 10 is fixedly connected with a drain pipe 501, the inside of the male die 4 is provided with a heat dissipation channel 505, the lower end of one side of the heat dissipation channel 505 is communicated with the back of the filter box 502, the upper end of one side of the heat dissipation channel 505 is communicated with the back of the drain pipe 501, the outside cooling water is filtered by the filter plate 510, so as to avoid impurities from entering and causing blockage in the heat dissipation channel 505, thereby affecting the subsequent cooling effect, and then the filtered cooling water enters the heat dissipation channel 505, the spiral heat dissipation channel 505 is used to increase the contact area and contact time of the material between the female die 3 and the male die 4, thereby facilitating the improvement of the material cooling and forming rate.

[0035] In this embodiment, the heat dissipation channel 505 is spirally distributed in the male die 4, and the spiral heat dissipation channel 505 is used to increase the contact area and contact time of the material between the female die 3 and the male die 4, thereby facilitating the improvement of the material cooling and forming rate.

[0036] In this embodiment, the sealing plate 506 is in the shape of an inverted convex shape, and the lower end of the sealing plate 506 is engaged with the inside of the mounting groove 508, and the inverted convex sealing plate 506 is used to improve the stability of the preliminary engagement of the sealing plate 506.

[0037] In this embodiment, the lower end of the surface of the sealing plate 506 is fixedly connected with a sealing ring 507, and the shape of the sealing ring 507 in plan view is in the shape of a back-shaped character, and the back-shaped sealing ring 507 is used to improve the sealing performance of the engagement of the sealing plate 506 and the inside of the mounting groove 508, thereby avoiding the leakage of cooling water.

[0038] In this embodiment, bolt holes 509 are formed in the top end of the filter box 502 on both sides of the mounting groove 508, and fixed bolts 512 are movably connected with the inside of the bolt holes 509 on both sides of the top end of the sealing plate 506, and the fixed bolts 512 are threadedly connected with the inside of the bolt holes 509, thereby improving the firmness and stability of the installation between the sealing plate 506 and the filter box 502.

[0039] In this embodiment, a guide plate 511 is fixedly connected to the inner bottom wall of the filter box 502 on one side of the filter plate 510. The guide plate 511 is inclined at an angle of thirty degrees to the vertical direction. The inclined guide plate 511 facilitates guiding the impurities filtered by the filter plate 510 so that they can be discharged more thoroughly and quickly from the sewage pipe 504.

[0040] In addition, sliding blocks 9 are fixedly connected to both sides of the sliding plate 10, and a sliding structure is formed between the sliding blocks 9 and the surface of the vertical rod 8. The sliding of the sliding blocks 9 on the surface of the vertical rod 8 improves the stability of the sliding plate 10 sliding up and down.

[0041] The working principle and use process of the utility model are as follows: first, the drain pipe 501 and the water inlet pipe 503 are connected to the external cooling water delivery pipe, and then the cylinder 7 is started to make the sliding plate 10 rise and bring the punch 4 and the die 3 together. At this time, the convex point on the top wall of the die 3 returns to force the demoulding plate 1101 to drop, causing the sliding rod 1106 and the slider 1102 to drop and compress the fixed groove 1103 and the telescopic rod 1104, and then the material is transported through the injection tube 1;

[0042] After the material is transported, the external cooling water can be fed into the filter box 502 through the water inlet pipe 503 and then filtered through the filter plate 510 to prevent impurities from entering and causing blockage in the heat dissipation channel 505, thereby affecting the subsequent cooling effect. The filtered cooling water then enters the heat dissipation channel 505. The spiral heat dissipation channel 505 increases the contact area and contact time with the material in the gap between the die 3 and the punch 4, thereby increasing the cooling and molding rate of the material. The cooled water is then discharged through the drain pipe 501 to achieve circulation.

[0043] After the plastic barrel is cooled and formed, the cylinder 7 is activated again to demould the female mold 3 and the male mold 4. Then, the elastic force of the fixing groove 1103 is utilized, and the telescopic rod 1104 is cooperated to make the slider 1102, the slide bar 1106 and the demoulding plate 1101 rise, exerting an upward force on the cooled and formed plastic barrel, thereby achieving demoulding between the plastic barrel and the surface of the male mold 4.

[0044] At the same time, the drain pipe 504 can be opened regularly to discharge the impurities filtered by the filter plate 510, and then the sealing plate 506 can be rotated with a tool such as a screwdriver until it is completely disengaged from the inside of the bolt hole 509, and then the filter plate 510 can be taken out from the inside of the filter box 502 through the sealing plate 506, so as to facilitate the thorough cleaning and anti-blocking of the filter plate 510. When installing the filter plate 510, the sealing ring 507 can be used to improve the sealing performance of the sealing plate 506 and the inside of the installation groove 508 to avoid leakage of cooling water.

[0045] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plastic pail injection mold characterized by, The utility model provides a moulding machine, including base (6), the middle position of bottom end of base (6) is fixedly connected with pneumatic cylinder (7), the output of pneumatic cylinder (7) penetrates base (6) and is fixedly connected with slide plate (10) through piston rod, the middle position of slide plate (10) top is fixedly connected with male die (4), and the top of male die (4) is provided with stripping assembly (11), and male die (4) and slide plate (10) are provided with filter heat dissipation subassembly (5), and the periphery of base (6) top is fixedly connected with vertical rod (8), and the top of vertical rod (8) is fixedly connected with top cover (2), and the middle position of top cover (2) top is fixedly connected with injection tube (1), and the middle position of top cover (2) bottom is fixedly connected with female die (3), and the top of female die (3) is communicated with the bottom of injection tube (1), The stripping assembly (11) includes a reserved slot (1107) formed in the top of the male die (4), a fixing slot (1103) formed in the inside of the male die (4) around the bottom of the reserved slot (1107), a telescopic rod (1104) fixedly connected to the inner bottom wall of the fixing slot (1103), a sliding block (1102) fixedly connected to the top of the telescopic rod (1104), a return spring (1105) wound around the telescopic rod (1104) at the bottom of the sliding block (1102), the bottom of the return spring (1105) fixedly connected to the inner bottom wall of the fixing slot (1103), and a sliding rod (1106) fixedly connected to the top of the sliding block (1102) and extending into the reserved slot (1107), and a stripping disc (1101) fixedly connected to the top of the sliding rod (1106).

2. The plastic bucket injection mold of claim 1, wherein, The sliding block (1102) and the inside of the fixing slot (1103) form a sliding structure, and the sliding block (1102) and the fixing slot (1103) are cross-shaped in plan view.

3. The plastic drum injection mold of claim 1, wherein, The stripping disc (1101) and the reserved slot (1107) are O-shaped in plan view, and the depth of the reserved slot (1107) is greater than the thickness of the stripping disc (1101).

4. The plastic drum injection mold of claim 1, wherein, The filter heat dissipation subassembly (5) includes a filter box (502) fixedly connected to one side of the front of the slide plate (10), a water inlet pipe (503) fixedly connected to the front of the filter box (502), a sewage pipe (504) fixedly connected to one side of the bottom of the filter box (502), a mounting slot (508) formed on the other side of the top of the filter box (502), a sealing plate (506) movably connected to the inside of the mounting slot (508), a filter plate (510) fixedly connected to the bottom of the sealing plate (506) and extending into the filter box (502), a water outlet pipe (501) fixedly connected to the other side of the front of the slide plate (10), and a heat dissipation channel (505) formed in the inside of the male die (4), the lower end of one side of the heat dissipation channel (505) communicated with the back of the filter box (502), and the upper end of one side of the heat dissipation channel (505) communicated with the back of the water outlet pipe (501).

5. The plastic drum injection mold of claim 4, wherein, The heat dissipation channel (505) is distributed spirally inside the male die (4).

6. The plastic drum injection mold of claim 4, wherein, The sealing plate (506) is in the shape of an inverted convex shape, and a clamping structure is formed between the lower end of the sealing plate (506) and the inside of the mounting groove (508).

7. The plastic drum injection mold of claim 4, wherein, The lower end of the surface of the sealing plate (506) is fixedly connected with a sealing ring (507), and the shape of the sealing ring (507) in the top view is in the shape of a back-to-back character.

8. The plastic drum injection mold of claim 4, wherein, Bolt holes (509) are formed in the top end of the filter box (502) on both sides of the sealing plate (506), and the top end of the sealing plate (506) is movably connected with fixed bolts (512) which are screw-threadedly matched with the inside of the bolt holes (509).

9. The plastic drum injection mold of claim 4, wherein, A flow guide plate (511) is fixedly connected to the inner bottom wall of the filter box (502) on one side of the filter plate (510), and the inclination angle between the flow guide plate (511) and the vertical direction is thirty degrees.

10. The plastic drum injection mold of claim 1, wherein, The sliding plate (10) is fixedly connected with sliding blocks (9) on both sides, and a sliding structure is formed between the sliding blocks (9) and the surface of the vertical rod (8).

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