Mold stripping device for injection molding product

Abstract

The utility model relates to a mold stripping device of an injection molding product. The support is formed by vertically arranging a supporting rod and a movable rod on a base in parallel. The injection molding assembly comprises a pressing rod which is connected to an accommodating cavity with an opening in the upper end of an extrusion pipe in a matched mode, and a discharging port is formed in the lower end of the extrusion pipe. The die assembly comprises an upper die which is provided with an upper die cavity with a downward opening, a lower die which is provided with a lower die cavity with an upward opening, and a full die cavity is defined by the upper die cavity and the lower die cavity in the abutting process of the upper die and the lower die. A supporting seat of the mold discharging assembly is movably connected to a movable rod, the movable rod is sleeved with a first spring, the upper end of the first spring abuts against the bottom of the supporting seat, the lower end of the first spring abuts against the base, and a lower mold is detachably connected to the supporting seat. According to the utility model, the mold with the full mold cavity is arranged on the small proofing injection molding machine, the injection molding mold can be designed according to the size of the full mold cavity, the disassembly and assembly and the adaptive use are convenient, in addition, automatic mold stripping is carried out through the linkage of injection molding, and high efficiency and economy are realized.

Description

Technical Field

[0001] The utility model belongs to the field of production equipment for injection molded products, and in particular relates to a demoulding device for injection molded products. Background Art

[0002] In the current toy production, single-structure product parts need to be proofed before mass production to ensure that the product meets the composite usage requirements during the proofing process and there is no interference when assembled on the toy. Only then can mass production be carried out. However, product proofing cannot be produced through mass production equipment because it involves machine adjustment, mold making and other costs. Such a large operation for proofing will cost a lot of money and is not in line with the economic efficiency of production. However, small sample injection molding machines have problems such as limited styles of compatible models and difficulty in demolding a single model after injection molding. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a demoulding device for injection molded products. By setting a mold with a full mold cavity on a small proofing injection molding machine, the injection mold can be designed according to the size of the full mold cavity, which is convenient for disassembly and adaptation. In addition, the demoulding is automatically performed through the linkage of injection molding, which is efficient and economical.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A demoulding device for injection molded products, comprising a bracket, an injection molding component, a mold component, and a demoulding component, wherein the bracket is composed of a base, a support rod, and a movable rod, wherein the support rod and the movable rod are vertically arranged parallel to each other on the base;

[0006] The injection molding assembly includes a pressure rod, a push rod, an extrusion tube and a fixed seat. The pressure rod is rotatably connected to the top of the support rod. The push rod is arranged on the pressure rod and is matched with the accommodating cavity opened at the upper end of the extrusion tube. The lower end of the extrusion tube is provided with a discharge port connected to the accommodating cavity. The extrusion tube is fixedly connected to the bracket. The extrusion tube is connected to the support rod and the movable rod of the bracket through the fixed seat.

[0007] The mold assembly includes an upper mold, a lower mold and an adapter seat, the upper mold is fixedly connected to the support rod, the upper mold is provided with an upper mold cavity with a downward opening, the upper end of the upper mold is provided with a feed port that cooperates with the discharge port and passes through the upper mold cavity, and the lower mold is provided with a lower mold cavity with an upward opening. When the upper mold and the lower mold are in contact with each other, the upper mold cavity and the lower mold cavity are enclosed to form a full mold cavity; one end of the adapter seat is fixedly connected to the support rod, and the other end of the adapter seat is detachably connected to the upper mold;

[0008] The demoulding assembly includes a support seat, a first spring, a rotating seat, a linkage rod, a rotating rod, an ejector rod and a pushing rod. The support seat is movably connected to the movable rod, the first spring is sleeved on the movable rod, the upper end of the first spring abuts against the bottom of the support seat, and the lower end of the first spring abuts against the base, the lower mold is detachably connected to the support seat, the rotating seat is connected to the base, the rotating rod is rotatably connected to the rotating seat, one end of the linkage rod is rotatably connected to the pressure rod, and the other end of the linkage rod is rotatably connected to the front end of the rotating rod, the ejector rod is rotatably connected to the front end of the rotating rod, the ejector rod faces upward toward the lower mold and cooperates with the ejection hole on the lower end surface of the lower mold, the ejection hole is communicated with the lower mold cavity, the lower end of the push rod is rotatably connected to the end of the rear end of the rotating rod, and the upper end of the push rod is connected to the support seat.

[0009] The ejection device of the injection molded product adopts this structure, and the bracket is composed of a support rod and a movable rod parallel and vertically plugged into the base to provide support. First, the mold needs to be fixed, so a mold assembly consisting of an upper mold, a lower mold and an adapter is set up. The upper mold is connected to the support rod through the adapter. The upper mold cavity in the upper mold and the lower mold cavity in the lower mold are combined to form a full mold cavity. The upper mold and the lower mold can be assembled in the upper mold cavity and the lower mold cavity respectively. The upper mold and the lower mold can be designed according to the actual size of the full mold cavity. Then, in subsequent proofing, this set of mold assemblies can be used for injection molding proofing, avoiding the inability to adapt well due to various sizes, and saving time and effort in subsequent assembly. Since the upper mold and the lower mold inside it are designed according to actual needs, no further details will be given here.

[0010] The upper mold is provided with a feed port that matches the discharge port, and the extrusion tube is connected to the bracket through a fixed seat. Therefore, the extrusion tube and the upper mold are actually in a relatively fixed state. During the assembly process, the upper mold with the upper mold installed is connected to the adapter seat, so that the feed port is sleeved on the discharge port and pressed and sealed to a certain extent to ensure that the positions of the upper mold and the extrusion tube are relatively stationary. A push rod that matches its accommodating cavity is provided at the upper end opening of the extrusion tube. During the downward pressure of the pressure rod at the top of the support rod, the push rod will be pressed into the accommodating cavity, so that the thermoplastic plastic or thermosetting material in the accommodating cavity is pushed into the discharge port and thence into the feed port, thereby completing the injection molding operation.

[0011] The lower mold is pressed against the upper mold when the first spring pushes the support seat upward, thereby forming an upward pushing force. However, this pushing force is actually not enough to maintain the pressure fit between the lower mold and the upper mold. It is very likely that the lower mold will move downward under pressure during the injection molding process, resulting in unsuccessful injection molding. Therefore, it is necessary to give the lower mold an upward force to support the support seat. Therefore, a mold ejection assembly is provided, and its rotating seat is provided on the base, and the rotating rod is rotatably connected to the rotating seat. In order for the rotating rod to be able to move in conjunction with the up and down pressure of the pressure rod, a linkage rod is provided. The upper end of the linkage rod is rotatably connected to the pressure rod, and the lower end of the linkage rod is rotatably connected to the front end of the rotating rod. Therefore, when the pressure rod moves upward, the rear end of the rotating rod The end will be pressed down and the front end will be lifted up. At this time, thermoplastic plastic or thermosetting material can be filled in the accommodating cavity. Then, in the process of pressing the pressure rod down, the front end of the rotating rod is pressed down. At this time, the ejector rod at the front end of the rotating rod moves down to avoid hitting the lower mold. The rear end of the rotating rod is lifted up, and the push rod is pushed upward to support the support seat to ensure that the support seat remains upward and the lower mold is pressed upward against the upper mold. At the same time, injection molding is carried out, maintaining continuous downward pressure of the pressure rod until the sample in the mold cools down, and the pressure rod is lifted up to make the ejector rod push up to push the sample in the lower mold of the lower mold upward. At the same time, the push rod moves downward, forcing the support seat to move downward, and pulling the lower mold on it downward. Therefore, the sample will be directly ejected from the mold, and the mold can be ejected during the linkage process.

[0012] Furthermore, the demolding assembly also includes a limit plate and a second spring, an extension plate is provided on the support seat, a U-shaped opening is provided on the extension plate, the upper end of the push rod is engaged in the U-shaped opening, the limit plate is arranged on the upper end surface of the push rod, the lower end of the limit plate is abutted against the extension plate, the second spring is sleeved on the push rod, and the upper end of the second spring is abutted against the lower end of the extension plate.

[0013] Compared with the prior art, the advantages of the present invention are: the design of the full mold cavity allows the upper mold and the lower mold to be designed according to the actual size of the full mold cavity, so that in subsequent proofing, this set of mold assemblies can be used for injection molding proofing, avoiding the inability to adapt well due to various sizes, and saving time and effort for subsequent assembly. During the downward movement of the pressure rod, the push rod is pushed upward to support the support seat to ensure that the support seat remains upward and the lower mold is kept pressing upward against the upper mold. At the same time, injection molding is carried out, and the continuous downward pressure of the pressure rod is maintained until the sample in the mold cools down. The pressure rod is lifted up, so that the ejector rod pushes up to push the sample in the lower mold of the lower mold upward, and at the same time, the push rod moves downward, forcing the support seat to move downward, pulling the lower mold on it downward, so that the sample will be directly ejected from the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a front perspective view of the present utility model;

[0016] Figure 2 For the utility model Figure 1 A local enlarged view of point A;

[0017] Figure 3 This is a rear perspective view of the present invention;

[0018] Figure 4 For the utility model Figure 3 A partial enlarged view of point B;

[0019] Figure 5 It is a top view of the utility model;

[0020] Figure 6 For the utility model Figure 5 CC cross-sectional view.

[0021] Among them: 1. bracket; 11. base; 12. support rod; 13. movable rod; 2. injection molding component; 21. pressure rod; 22. push rod; 23. extrusion tube; 231. accommodating cavity; 232. discharge port; 24. fixed seat; 3. mold assembly; 31. upper mold; 311. upper mold cavity; 312. feed port; 32. lower mold; 321. lower mold cavity; 322. ejection hole; 33. full mold cavity; 34. adapter seat; 4. ejection assembly; 41. support seat; 411. extension plate; 412. U-shaped mouth; 42. first spring; 43. rotating seat; 44. linkage rod; 45. rotating rod; 46. ejector rod; 47. push rod; 48. limit plate; 49. second spring. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0023] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0024] like Figure 1-6 As shown, a demoulding device for injection molded products includes a bracket 1, an injection molding component 2, a mold component 3, and a demoulding component 4. The bracket 1 is composed of a base 11, a support rod 12, and a movable rod 13. The support rod 12 and the movable rod 13 are vertically arranged parallel to each other on the base 11.

[0025] The injection molding assembly 2 includes a pressure rod 21, a push rod 22, an extrusion tube 23 and a fixing seat 24. The pressure rod 21 is rotatably connected to the top of the support rod 12. The push rod 22 is arranged on the pressure rod 21 and is matched with the accommodating cavity 231 opened at the upper end of the extrusion tube 23. The lower end of the extrusion tube 23 is provided with a discharge port 232 connected to the accommodating cavity 231. The extrusion tube 23 is fixedly connected to the bracket 1; the extrusion tube 23 is connected to the support rod 12 and the movable rod 13 of the bracket 1 through the fixing seat 24;

[0026] The mold assembly 3 includes an upper mold 31, a lower mold 32 and an adapter seat 34. The upper mold 31 is fixedly connected to the support rod 12. The upper mold 31 is provided with an upper mold 31 cavity with an opening downward. The upper end of the upper mold 31 is provided with a feed port 312 that cooperates with the discharge port 232 and passes through the upper mold 31 cavity. The lower mold 32 is provided with a lower mold 32 cavity with an opening upward. When the upper mold 31 and the lower mold 32 are in contact with each other, the upper mold 31 cavity and the lower mold 32 cavity are enclosed to form a full mold cavity 33; one end of the adapter seat 34 is fixedly connected to the support rod 12, and the other end of the adapter seat 34 is detachably connected to the upper mold 31;

[0027] The ejection assembly 4 includes a support seat 41, a first spring 42, a rotating seat 43, a linkage rod 44, a rotating rod 45, an ejection rod 46 and a push rod 47. The support seat 41 is movably connected to the movable rod 13. The first spring 42 is sleeved on the movable rod 13. The upper end of the first spring 42 abuts against the bottom of the support seat 41. The lower end of the first spring 42 abuts against the base 11. The lower mold 32 is detachably connected to the support seat 41. The rotating seat 43 is connected to the base 11. The rotating rod 45 is rotatable. Connected to the rotating seat 43, one end of the linkage rod 44 is rotatably connected to the pressure rod 21, and the other end of the linkage rod 44 is rotatably connected to the front end of the rotating rod 45. The ejector rod 46 is rotatably connected to the front end of the rotating rod 45. The ejector rod 46 is upward toward the lower mold 32 and cooperates with the ejection hole 322 on the lower end surface of the lower mold 32. The ejection hole 322 is connected to the cavity of the lower mold 32. The lower end of the push rod 47 is rotatably connected to the end of the rear end of the rotating rod 45, and the upper end of the push rod 47 is connected to the support seat 41.

[0028] Furthermore, the demolding assembly 4 also includes a limit plate 48 and a second spring 49. The support seat 41 is provided with an extension plate 411, and the extension plate 411 is provided with a U-shaped opening 412. The upper end of the push rod 47 is engaged in the U-shaped opening 412. The limit plate 48 is arranged on the upper end surface of the push rod 47, and the lower end of the limit plate 48 is abutted against the extension plate 411. The second spring 49 is sleeved on the push rod 47, and the upper end of the second spring 49 is abutted against the lower end of the extension plate 411.

[0029] Description of the working method of this utility model:

[0030] The ejection device of the injection molded product adopts this structure, and the bracket 1 is composed of a support rod 12 and a movable rod 13 parallel and vertically inserted into the base 11 to provide support. First, the mold needs to be fixed, so a mold assembly 3 consisting of an upper mold 31, a lower mold 32 and an adapter seat 34 is set. The upper mold 31 is connected to the support rod 12 through the adapter seat 34. The upper mold 31 cavity in the upper mold 31 and the lower mold 32 cavity in the lower mold 32 are enclosed to form a full mold cavity 33. The upper mold and the lower mold can be respectively assembled in the upper mold 31 cavity and the lower mold 32 cavity. The upper mold and the lower mold can be designed according to the actual size of the full mold cavity 33. Then, in subsequent proofing, this set of mold assembly 3 can be used for injection molding proofing, avoiding the inability to adapt well due to various sizes, and saving time and effort in subsequent assembly. Since the upper mold and the lower mold therein are designed according to actual needs, no further details will be given here.

[0031] The upper mold 31 is provided with a feed port 312 that cooperates with the discharge port 232, and the extrusion tube 23 is connected to the bracket 1 through a fixing seat 24. Therefore, the extrusion tube 23 and the upper mold 31 are actually in a relatively fixed state. During the assembly process, the upper mold 31 with the upper mold installed is connected to the adapter seat 34, so that the feed port 312 is sleeved on the discharge port 232 and pressed to a certain extent to ensure that the positions of the upper mold 31 and the extrusion tube 23 are relatively stationary. A push rod 22 that cooperates with its accommodating cavity 231 is provided at the upper end opening of the extrusion tube 23. When the pressure rod 21 at the top of the support rod 12 is pressed downward, the push rod 22 will be pressed into the accommodating cavity 231, so that the thermoplastic plastic or thermosetting material in the accommodating cavity 231 is pushed into the discharge port 232 and thence into the feed port 312, thereby completing the injection molding operation.

[0032] The first spring 42 is used to push the lower mold 32 upwards to push the support seat 41, so that the lower mold 32 is in contact with the upper mold 31, thereby forming an upward pushing force. However, this pushing force is not enough to keep the lower mold 32 and the upper mold 31 pressed together. It is very likely that the lower mold 32 will move downwards under the pressure during the injection molding process, resulting in unsuccessful injection molding. Therefore, it is necessary to give the lower mold 32 a force to keep it upwards to support the support seat 41. Therefore, the ejection assembly 4 is provided, and its rotating seat 43 is provided on the base 11, and the rotating rod 45 is rotatably connected to the rotating seat 43. In order for the rotating rod 45 to be able to move in conjunction with the up and down pressure of the pressure rod 21, a linkage rod 44 is provided. The upper end of the linkage rod 44 is rotatably connected to the pressure rod 21, and the lower end of the linkage rod 44 is rotatably connected to the front end of the rotation rod 45. Therefore, when the pressure rod 21 moves upwards, the rotation rod 43 At the same time, the push rod 47 moves downward, forcing the support seat 41 to move downward, pulling the lower mold 32 on it downward, so that the sample will be directly ejected from the mold, and the mold will be ejected during the process of linkage action.

[0033] If the connection between the push rod 47 and the support seat 41 is a rigid connection, then during the process of the pressure rod 21 being lifted, the push rod 47 will also pull the support seat 41 downward, causing the lower mold 32 to be out of contact with the upper mold 31. In this case, when the pressure rod 21 is pressed down, it is very likely that the lower mold 32 has not yet contacted the upper film, and the thermoplastic plastic or thermosetting material has already entered the mold downward, resulting in the inability to perform injection molding. Therefore, the push rod 47 is made detachable and abuts against the U-shaped opening 412 of the extension plate 411 on the support seat 41, and a limit plate 48 is provided at the top of the push rod 47. A second spring 49 is sleeved on the push rod 47, and the upper end of the second spring 49 abuts against the lower end of the extension plate 411. When the pressure rod 21 is lifted to the top, the limit plate 48 presses the support seat 41 downward, so that the lower mold 32 is completely exposed. At this time, the lower mold 32 can be disassembled and installed on the support seat 41. When the pressure rod 21 is pressed down to the middle, the limit plate 48 does not abut against the extension plate 411. At this time, the second spring 49 will generate an upward supporting force, cooperating with the supporting force of the first spring 42 to abut the lower mold 32 on the upper mold 31. At this time, thermoplastic plastic or thermosetting material can be filled in the accommodating cavity 231. When the pressure rod 21 continues to be pressed down, the second spring 49 will further maintain the pressure on the support seat 41 during the process of continuous lifting of the rear end of the rotating rod 45, ensuring that the lower mold 32 and the upper mold 31 will not separate.

[0034] The beneficial effect of the present invention is that the design of the full mold cavity 33 allows the upper mold and the lower mold to be designed according to the actual size of the full mold cavity 33. Then, in the subsequent proofing, this set of mold components 3 can be used for injection molding proofing, avoiding the inability to adapt well due to the variety of sizes, and saving time and effort for the subsequent assembly. During the downward movement of the pressure rod 21, the push rod 47 is pushed upward to support the support seat 41, ensuring that the support seat 41 remains upward, and the pressing force of the lower mold 32 is maintained to support the upper mold 31. At the same time, injection molding is carried out, and the continuous downward pressure of the pressure rod 21 is maintained until the sample in the mold is cooled. The pressure rod 21 is lifted up, so that the ejection rod 46 pushes up to push the sample in the lower mold of the lower mold 32 upward, and at the same time, the push rod 47 moves downward, forcing the support seat 41 to move downward, pulling the lower mold 32 on it downward, so that the sample will be directly ejected from the mold.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A demoulding device for injection molded products, characterized in that: It includes a bracket, an injection molding component, a mold component and a demoulding component. The bracket is composed of a base, a support rod and a movable rod. The support rod and the movable rod are vertically set parallel to each other on the base. The injection molding assembly includes a pressure rod, a push rod and an extrusion tube. The pressure rod is rotatably connected to the top of the support rod. The push rod is arranged on the pressure rod and cooperates with the accommodating cavity opened at the upper end of the extrusion tube. The lower end of the extrusion tube is provided with a discharge port connected to the accommodating cavity. The extrusion tube is fixedly connected to the bracket. The mold assembly includes an upper mold and a lower mold, the upper mold is fixedly connected to the support rod, the upper mold is provided with an upper mold cavity with an opening downward, the upper end of the upper mold is provided with a feed port that cooperates with the discharge port and passes through the upper mold cavity, and the lower mold is provided with a lower mold cavity with an opening upward, and the upper mold cavity and the lower mold cavity are enclosed to form a full mold cavity when the upper mold and the lower mold are in contact with each other; The demoulding assembly includes a support seat and a first spring. The support seat can be movably connected to the movable rod. The first spring is sleeved on the movable rod. The upper end of the first spring abuts against the bottom of the support seat. The lower end of the first spring abuts against the base. The lower mold is detachably connected to the support seat.

2. The ejection device for injection molded products according to claim 1, characterized in that: The injection molding component also includes a fixing seat, and the extrusion tube is connected to the support rod and the movable rod of the bracket through the fixing seat.

3. The ejection device for injection molded products according to claim 2, characterized in that: The mold assembly also includes a transfer seat, one end of which is fixedly connected to the support rod, and the other end of which is detachably connected to the upper mold.

4. The ejection device for injection molded products according to claim 3, characterized in that: The demoulding assembly also includes a rotating seat, a linkage rod, a rotating rod, an ejector rod and a pushing rod. The rotating seat is connected to the base, the rotating rod is rotatably connected to the rotating seat, one end of the linkage rod is rotatably connected to the pressure rod, the other end of the linkage rod is rotatably connected to the front end of the rotating rod, the ejector rod is rotatably connected to the front end of the rotating rod, the ejector rod faces upward toward the lower mold and cooperates with the ejection hole on the lower end surface of the lower mold, the ejection hole is connected to the lower mold cavity, the lower end of the push rod is rotatably connected to the end of the rear end of the rotating rod, and the upper end of the push rod is connected to the support seat.

5. The ejection device for injection molded products according to claim 4, characterized in that: The demoulding assembly also includes a limit plate and a second spring. An extension plate is provided on the support seat. A U-shaped opening is provided on the extension plate. The upper end of the push rod is engaged in the U-shaped opening. The limit plate is arranged on the upper end surface of the push rod. The lower end of the limit plate is abutted against the extension plate. The second spring is sleeved on the push rod. The upper end of the second spring is abutted against the lower end of the extension plate.

Images