Injection mold with quantitative effect

Abstract

The utility model relates to the field of injection molds, and discloses an injection mold with a quantitative effect, which comprises a base, the top end of the outer wall of the base is fixedly connected with a fixed frame, the top end of the outer wall of the fixed frame is provided with a telescopic cylinder, the bottom end of the outer wall of the telescopic cylinder is fixedly connected with an upper mold, and the surface of the base is fixedly connected with a lower mold. A demolding mechanism is arranged on the inner wall of the lower mold, a telescopic hose is fixedly connected to the top end of the outer wall of the upper mold, a push plate is fixedly connected to the bottom end of the outer wall of a push rod, a limiting assembly is arranged on the inner wall of the material box, and a feeding opening is fixedly connected to the outer wall of the material box. According to the utility model, the sliding column can move in the material box to drive the push plate to move so as to adjust the internal capacity of the material box, so that the same quantity of discharged materials every time is ensured, and materials in the material box can be extruded into the upper die and the lower die through the movement of the push plate.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold with a quantitative effect. Background Art

[0002] Chemical-resistant one-piece cookware is usually made of special materials with high temperature and chemical corrosion resistance, such as polytetrafluoroethylene (PTFE), polyester resin (PET), polyamide resin (PA), polyphenylene sulfide (PES), etc. For this type of cookware, it is necessary to design an injection mold with a quantitative effect to ensure that the product meets the requirements.

[0003] After searching, Chinese patent publication number: CN 215203286 U discloses an injection mold device, belonging to the field of mold processing technology. This device uses an ejection mechanism to push out the workpiece for easy removal. During the injection molding process, the pallet moves downward for injection molding, and a spring assembly is connected to the rear of the pallet. The elastic force after the spring elastic deformation is converted into a pulling force to pull the pallet. After the injection molding is completed, the pallet is retracted and reset by the spring tension. The spring is then compressed again to prevent direct contact between the push rod and the pallet, which would cause deformation of the push rod or the pallet surface and affect the service life of the parts. The reduced diameter of the pallet's mouth allows demolding between workpieces, improving overall production efficiency.

[0004] Although the above patent improves the overall production efficiency, it has the following disadvantages: when injecting raw materials into the injection mold, it is inconvenient to control the amount of injected raw materials, resulting in different amounts of raw materials used for different types of products. Pouring too much or too little will affect the production quality of the product. Therefore, an injection mold with a quantitative effect is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides an injection mold with a quantitative effect, aiming to improve the problem in the prior art that it is inconvenient to control the amount of injected raw materials.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an injection mold with a quantitative effect, comprising a base, the top end of the outer wall of the base is fixedly connected to a fixed frame, the top end of the outer wall of the fixed frame is provided with a telescopic cylinder, the bottom end of the outer wall of the telescopic cylinder is fixedly connected to the upper mold, the surface of the base is fixedly connected to the lower mold, the inner wall of the lower mold is provided with a demolding mechanism, the top end of the outer wall of the upper mold is fixedly connected to a telescopic hose, the top end of the outer wall of the fixed frame is provided with a unloading mechanism, the unloading mechanism includes a material box, the top end of the inner wall of the material box passes through and is slidably connected with a sliding column, the top end of the outer wall of the sliding column is elastically connected to a push rod through a limit spring, the bottom end of the outer wall of the push rod is fixedly connected to a push plate, the inner wall of the material box is provided with a limiting component, and the outer wall of the material box is fixedly connected to the feed port.

[0007] As a further description of the above technical solution:

[0008] The outer walls on both sides of the upper mold are fixedly connected with contact blocks, and the demoulding mechanism includes a fixed seat. The inner walls on both sides of the fixed seat are elastically connected with wedge blocks through connecting springs. The top of the outer wall of the fixed seat is fixedly connected with multiple groups of top columns, the outer wall on the right side of the wedge block is fixedly connected with a wire group, and the inner wall of the fixed seat is rotatably connected with two groups of auxiliary wheels.

[0009] As a further description of the above technical solution:

[0010] The limiting assembly includes an insertion rod, and the insertion rod is elastically connected to the inner wall of the top end of the material box through a return spring.

[0011] As a further description of the above technical solution:

[0012] The material box is fixedly connected to the right side of the top of the fixed frame, and the end of the telescopic hose away from the upper mold is fixedly connected to the bottom end of the outer wall of the material box.

[0013] As a further description of the above technical solution:

[0014] One end of the limit spring is fixedly connected to the top end of the outer wall of the sliding column, and the other end of the limit spring is fixedly connected to the inner side wall of the top end of the push rod.

[0015] As a further description of the above technical solution:

[0016] The push plate is slidably connected to the inner wall of the material box, and the push rod passes through and is slidably connected to the inner wall of the sliding column.

[0017] As a further description of the above technical solution:

[0018] The fixed seat is slidably connected to the inner wall of the bottom end of the lower mold, the bottom end of the outer wall of the fixed seat contacts the surface of the base, the top column passes through and is slidably connected to the inner wall of the lower mold, the wire group passes through and is slidably connected to the inner wall of the fixed seat, and the outer wall of the wire group contacts the inner side wall of the auxiliary wheel.

[0019] As a further description of the above technical solution:

[0020] One end of the connecting spring is fixedly connected to the right outer wall of the wedge block, the other end of the connecting spring is fixedly connected to the inner wall of the fixing seat, the wedge block is slidably connected to the inner wall of the fixing seat, and the end of the wire group away from the wedge block is fixedly connected to the top of the outer wall of the base.

[0021] As a further description of the above technical solution:

[0022] One end of the return spring is fixedly connected to the surface of the insertion rod, and the other end of the return spring is fixedly connected to the inner wall of the top end of the material box.

[0023] As a further description of the above technical solution:

[0024] The insertion rod passes through and is slidably connected to the inner wall of the top end of the material box. The surface of the sliding column is provided with multiple groups of through holes, and the bottom end of the outer wall of the insertion rod is plugged into the inner wall of the through hole.

[0025] The utility model has the following beneficial effects:

[0026] 1. In the present invention, a push plate and a sliding column are provided. When the injection volume is adjusted according to the size of the mold, the sliding column can be moved inside the material box, thereby driving the push plate to move to adjust the internal capacity of the material box, thereby ensuring that the amount of material discharged each time is the same, and through the movement of the push plate, the material inside the material box can be squeezed into the interior of the upper mold and the lower mold.

[0027] 2. In the present invention, a demoulding mechanism is provided so that after the pot is formed, the upper and lower molds can be closed and opened to drive the fixed seat and the ejector column to rise, so as to push open the pot formed in the lower mold, thereby realizing automatic demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an injection mold with a quantitative effect proposed by the utility model;

[0029] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a material box of an injection mold with a quantitative effect proposed by the utility model;

[0030] Figure 3 The utility model proposes an injection mold with a quantitative effect Figure 2 A schematic diagram of the enlarged structure of part A;

[0031] Figure 4 This is a partial cross-sectional structural diagram of an upper mold and a fixing seat of an injection mold with a quantitative effect proposed by the utility model;

[0032] Figure 5 The utility model proposes an injection mold with a quantitative effect Figure 4 Schematic diagram of the enlarged structure of part B.

[0033] Legend:

[0034] 1. Base; 2. Fixed frame; 3. Telescopic cylinder; 4. Upper mold; 5. Contact block; 6. Lower mold; 7. Unloading mechanism; 71. Material box; 72. Sliding column; 73. Limit spring; 74. Push rod; 75. Push plate; 76. Limit assembly; 761. Return spring; 762. Insert rod; 8. Feed port; 9. Demolding mechanism; 91. Fixed seat; 92. Ejector column; 93. Connecting spring; 94. Wedge block; 95. Wire group; 96. Auxiliary wheel; 10. Telescopic hose. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Reference Figure 1-Figure 3 The top of the outer wall of the present invention is fixedly connected to the fixed frame 2, and the top of the outer wall of the fixed frame 2 is provided with a telescopic cylinder 3. The telescopic cylinder 3 is a prior art, which controls the rise or fall of the upper mold 4 to fit with the lower mold 6, thereby performing mold closing molding on the one-piece pot. The bottom end of the outer wall of the telescopic cylinder 3 is fixedly connected to the upper mold 4, and the surface of the base 1 is fixedly connected to the lower mold 6. The upper mold 4 and the lower mold 6 are both prior art, which are the mold cores of the existing one-piece pot. The inner wall of the lower mold 6 is provided with a demoulding mechanism 9. The top end of the outer wall of the upper mold 4 is fixedly connected to a telescopic hose 10. The end of the telescopic hose 10 away from the upper mold 4 is fixedly connected to the bottom end of the outer wall of the material box 71. The telescopic hose 10 is a telescopic hose, which allows the upper mold 4 to be telescopically extended during the up and down movement, thereby preventing the tube body from being wrinkled as a whole, resulting in the injection molding material being unable to enter the interior of the upper mold 4.

[0037] Reference Figure 2-Figure 3, a feeding mechanism 7 is provided at the top of the outer wall of the fixed frame 2, which includes a material box 71. The material box 71 is fixedly connected to the right side of the top of the fixed frame 2. A cavity is provided inside the material box 71 to place the raw materials for injection molding of the pot. The top of the inner wall of the material box 71 is penetrated and slidably connected with a sliding column 72. The surface of the sliding column 72 is provided with a scale. By lifting it inside the material box 71, the space capacity inside the material box 71 can be judged. The top of the outer wall of the sliding column 72 is elastically connected to the push rod 74 through a limit spring 73. One end of the limit spring 73 is fixedly connected to the top of the outer wall of the sliding column 72, and the other end of the limit spring 73 is fixedly connected to the inner side wall of the top of the push rod 74. The limit spring After the chute 7 is opened, the locking chute 71 is unlocked and the lock 73 is unlocked, so that the lock 73 can be unlocked after the chute 7 is unlocked, and the lock 73 is unlocked.

[0038] Reference Figure 3 When the locking cam 762 is in the unlocked position, the locking cam 762 is in the unlocked position, and the locking cam 762 is in the unlocked position, so that the locking cam 762 can be unlocked easily.

[0039] Reference Figure 4-Figure 5The outer walls of the upper mold 4 are fixedly connected with contact blocks 5, and the positions of the two groups of contact blocks 5 correspond to the positions of the two groups of wedge blocks 94. The demoulding mechanism 9 includes a fixed seat 91, which is slidably connected to the inner wall of the bottom end of the lower mold 6. The inner wall of the lower mold 6 is provided with a cavity, and support frames are provided on the four sides, so that the fixed seat 91 can only move up and down on the inner wall of the bottom end of the lower mold 6 and cannot be separated from its inner wall. The bottom end of the outer wall of the fixed seat 91 contacts the surface of the base 1. The inner walls of both sides of the fixed seat 91 are elastically connected with wedge blocks 94 by connecting springs 93. One end of the connecting spring 93 is fixedly connected to the right outer wall of the wedge block 94, and the other end of the connecting spring 93 is fixedly connected to the inner wall of the fixed seat 91. The function of the connecting spring 93 is to automatically reset the wedge block 94 when the arc surface of the wedge block 94 is squeezed to allow it to move. The wedge block 94 is slidably connected to the inner wall of the fixed seat 91, and the top of the outer wall of the fixed seat 91 is fixedly connected to multiple groups of top columns 92. The top column 92 penetrates The inner wall of the lower mold 6 is provided with a sliding groove that fits the top column 92, and the initial state of the top column 92 is flush with the bottom end of the inner mold core of the lower mold 6. The one-piece pot after injection molding of the inner wall of the lower mold 6 can be ejected by rising the top column 92. The outer wall of the right side of the wedge block 94 is fixedly connected to the wire group 95. The end of the wire group 95 away from the wedge block 94 is fixedly connected to the top of the outer wall of the base 1. When the fixed seat 91 rises, The wire group 95 is used to pull the wedge block 94 to move on the inner wall of the fixed seat 91, so that the bottom end of the wedge block 94 is disengaged from the engagement of the contact block 5. The wire group 95 passes through and is slidably connected to the inner wall of the fixed seat 91. The outer wall of the wire group 95 contacts the inner side wall of the auxiliary wheel 96. By providing the auxiliary wheel 96, the position of the wire group 95 after being pulled is guided to avoid the wire group 95 from tilting and causing damage and breakage. The inner wall of the fixed seat 91 is rotatably connected with two sets of auxiliary wheels 96.

[0040] Working principle: When adjusting the injection volume of the integrated cookware, the telescopic cylinder 3 can be used first to fit the upper mold 4 and the lower mold 6. At this time, the internal capacity of the material box 71 is adjusted according to the size of the mold. First, pull the insertion rod 762 to disengage its bottom end from the engagement with the sliding column 72, and during the movement, the return spring 761 will be elastically compressed. At this time, the sliding column 72 can be directly moved up and down on the inner wall of the material box 71, thereby driving the push plate 75 to move up and down on the inner wall of the material box 71, thereby adjusting the capacity of the internal cavity of the material box 71, and judging the internal capacity according to the scale on the surface of the sliding column 72. After the adjustment is completed, release the insertion rod 762, which will be elastically acted upon by the return spring 761, restoring it to its initial position, thereby fixing the position of the sliding column 72 after movement.

[0041] At this time, the upper mold 4 and the lower mold 6 can be closed by the telescopic cylinder 3, and the material can be injected into the interior of the discharge mechanism 7 through the feed port 8. By pressing the push rod 74 to descend on the inner wall of the sliding column 72, the push plate 75 pushes the material inside the material box 71 from the telescopic hose 10 into the interior of the upper mold 4 and the lower mold 6 to perform quantitative injection molding.

[0042] At the same time, during the descent of the upper mold 4, the two groups of contact blocks 5 on the outer wall will contact the arc surface of the top of the two groups of wedge blocks 94, thereby squeezing the two groups of wedge blocks 94 to move on the inner wall of the fixed seat 91, and allowing the connecting spring 93 to be elastically compressed until the inner side walls of the two groups of contact blocks 5 contact the bottom ends of the wedge blocks 94. After the injection molding is completed, the rising of the upper mold 4 will drive the fixed seat 91 and the top column 92 to rise synchronously, thereby moving on the inner wall of the lower mold 6 through the top column 92, thereby ejecting the pot molded inside. At the same time, the two groups of wedge blocks 94 will be restrained by the wire group 95 to allow the two groups of wedge blocks 94 to move on the inner wall of the fixed seat 91, thereby canceling the contact with the inner side walls of the contact blocks 5, so that the upper mold 4 can drive the contact blocks 5 to rise, and the wedge blocks 94 will also be automatically reset by the elastic action of the connecting spring 93.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An injection mold with quantitative effect, comprising a base (1), characterized in that: The top end of the outer wall of the base (1) is fixedly connected to a fixed frame (2), the top end of the outer wall of the fixed frame (2) is provided with a telescopic cylinder (3), the bottom end of the outer wall of the telescopic cylinder (3) is fixedly connected to an upper mold (4), the surface of the base (1) is fixedly connected to a lower mold (6), the inner wall of the lower mold (6) is provided with a demoulding mechanism (9), the top end of the outer wall of the upper mold (4) is fixedly connected to a telescopic hose (10), the top end of the outer wall of the fixed frame (2) is provided with a material discharge mechanism (7), and the material discharge mechanism (7) comprises a material box (71); A sliding column (72) passes through and is slidably connected to the top end of the inner wall of the material box (71); the top end of the outer wall of the sliding column (72) is elastically connected to a push rod (74) via a limit spring (73); the bottom end of the outer wall of the push rod (74) is fixedly connected to a push plate (75); a limit assembly (76) is provided on the inner wall of the material box (71); and a feed port (8) is fixedly connected to the outer wall of the material box (71).

2. An injection mold with quantitative effect according to claim 1, characterized in that: The outer walls on both sides of the upper mold (4) are fixedly connected with contact blocks (5), the demoulding mechanism (9) comprises a fixed seat (91), the inner walls on both sides of the fixed seat (91) are elastically connected with wedge blocks (94) through connecting springs (93), the top end of the outer wall of the fixed seat (91) is fixedly connected with a plurality of groups of top columns (92), the outer wall on the right side of the wedge block (94) is fixedly connected with a wire group (95), and the inner wall of the fixed seat (91) is rotatably connected with two groups of auxiliary wheels (96).

3. The injection mold with quantitative effect according to claim 1, characterized in that: The limiting assembly (76) comprises an insert rod (762), and the insert rod (762) is elastically connected to the inner wall at the top end of the material box (71) through a return spring (761).

4. The injection mold with quantitative effect according to claim 1, characterized in that: The material box (71) is fixedly connected to the right side of the top end of the fixed frame (2), and one end of the telescopic hose (10) away from the upper mold (4) is fixedly connected to the bottom end of the outer wall of the material box (71).

5. The injection mold with quantitative effect according to claim 1, characterized in that: One end of the limit spring (73) is fixedly connected to the top end of the outer wall of the sliding column (72), and the other end of the limit spring (73) is fixedly connected to the inner side wall of the top end of the push rod (74).

6. The injection mold with quantitative effect according to claim 1, characterized in that: The push plate (75) is slidably connected to the inner wall of the material box (71), and the push rod (74) penetrates and is slidably connected to the inner wall of the sliding column (72).

7. The injection mold with quantitative effect according to claim 2, characterized in that: The fixing seat (91) is slidably connected to the inner wall of the bottom end of the lower mold (6), the bottom end of the outer wall of the fixing seat (91) contacts the surface of the base (1), the top column (92) passes through and is slidably connected to the inner wall of the lower mold (6), the wire group (95) passes through and is slidably connected to the inner wall of the fixing seat (91), and the outer wall of the wire group (95) contacts the inner side wall of the auxiliary wheel (96).

8. The injection mold with quantitative effect according to claim 2, characterized in that: One end of the connecting spring (93) is fixedly connected to the right outer wall of the wedge block (94), the other end of the connecting spring (93) is fixedly connected to the inner wall of the fixing seat (91), the wedge block (94) is slidably connected to the inner wall of the fixing seat (91), and one end of the wire group (95) away from the wedge block (94) is fixedly connected to the top of the outer wall of the base (1).

9. The injection mold with quantitative effect according to claim 3, characterized in that: One end of the return spring (761) is fixedly connected to the surface of the insertion rod (762), and the other end of the return spring (761) is fixedly connected to the inner wall at the top end of the material box (71).

10. The injection mold with quantitative effect according to claim 3, characterized in that: The insertion rod (762) penetrates and is slidably connected to the inner wall of the top end of the material box (71); a plurality of through holes are provided on the surface of the sliding column (72); and the bottom end of the outer wall of the insertion rod (762) is plugged into the inner wall of the through hole.

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