Injection mold capable of cutting off the glue inlet in the film
By designing an injection mold that can cut the rubber inlet in the film, the "hot" cutting effect is achieved using the injection hole and the micro cylinder drive cutter, which solves the problems of low efficiency and high cost in the rubber inlet cutting process, and achieves an efficient and traceless cutting effect.
Patent Information
- Application Number
- CN202420436871.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The existing injection molds are prone to uneven cutting or product deformation during the rubber inlet cutting process, and require manual supplementary operations, which reduces work efficiency and increases production costs.
An injection mold that can cut the rubber inlet in the film is designed. Hot melt liquid is injected through the injection hole on the top of the upper mold seat to form the shape of the product parts, and a micro cylinder is used to drive the cutting knife to move upwards to achieve a "hot" cutting effect and cut off the rubber at the rubber inlet.
The cutting effect in the film is achieved, the cut position of the parts product is smooth and traceless, the cutting quality is high, and there is no need for secondary processing, which reduces the operating costs of the enterprise and greatly improves work efficiency.
Smart Images
Figure CN222712737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to an injection mold capable of cutting off a glue inlet in a film. Background Art
[0002] With the rise of industrial automation, automation can be used to reduce manpower and increase efficiency, reduce corporate operating costs, improve product cost performance, further enhance the company's competitiveness, and maintain long-term operation.
[0003] In existing injection molds, the glue inlet is usually cut by a robot that takes the product out of the mold, places it on a customized slug cutting tool, and cuts the slug through pneumatic shears. This operation can easily result in uneven cutting of the glue inlet or cause the risk of product deformation, and subsequent manual work is still required, which greatly reduces work efficiency and increases production costs. Summary of the invention
[0004] The utility model aims to provide an injection mold capable of cutting off a glue inlet in a film, so as to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An injection mold capable of cutting off a glue inlet within a film comprises a lower mold base and an upper mold base, wherein an upwardly protruding lower mold core is provided at the middle position of the top of the lower mold base; an upper mold core matched with the lower mold core is provided at the middle position of the bottom of the upper mold base, wherein the upper mold core and the lower mold core are combined to form a mold cavity; a glue injection hole connected to the lower surface of the upper mold core is provided at the middle position of the top of the upper mold base, wherein the glue injection hole passes through the upper mold core downward and is connected to the mold cavity; a flow channel is provided at the middle position of the mold cavity, wherein the flow channel is connected to the bottom of the glue injection hole; a micro-oil cylinder is fixedly installed at the bottom of the lower mold base, wherein the top end of the piston rod of the micro-oil cylinder is fixedly connected to a push rod; the push rod is vertically arranged, and a cutter is provided at the top end of the push rod, wherein the cutter passes through the lower mold core upward and is connected to the mold cavity.
[0007] Preferably, the mold cavities are provided in two groups and are symmetrically arranged, wherein the two groups of mold cavities are respectively connected to two ends of the flow channel.
[0008] Preferably, an inner mold oil circuit is provided inside the lower mold base, wherein the micro-oil cylinder is connected to the inner mold oil circuit.
[0009] Preferably, a glue inlet is provided between the flow channel and the mold cavity.
[0010] Preferably, the cutter is arranged below the glue inlet, wherein the width of the cutter is the same as the width of the glue inlet.
[0011] Preferably, the cross-section of the blade at the top of the cutter is a right triangle, wherein a right-angled side of the cutter is in contact with the side of the mold cavity, and the inclined side of the cutter is close to the glue inlet.
[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model injects hot melt liquid into the gap of the mold cavity through the injection hole on the top of the upper mold base through the flow channel, thereby forming the shape of the product part, and then maintains the pressure. After the injection molding is completed, at the beginning of cooling and shaping, the micro-cylinder drives the push rod to drive the cutter to move upward, so that the blade at the top of the cutter moves upward close to the side of the mold cavity, wherein the cutter begins to complete the feeding action. At this time, the glue has not been completely solidified, and the cutter can achieve a "hot" cutting effect, cutting off the glue at the glue inlet, and then controlling the cutter to remain at the position between the product part and the glue inlet until the product part is cooled, controlling the micro-cylinder to drive the push rod to drive the cutter to retract downward into the lower mold core, completing the separation of the part product and the glue inlet, opening the mold to take out the part product, thereby achieving the film in-cut effect, and the incision position of the part product is smooth and traceless, the cutting quality is high, and no secondary processing is required, which reduces the operating cost of the enterprise and greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the lower die base of the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the micro oil cylinder of the utility model connected with the oil circuit in the mold;
[0016] Figure 4 yes Figure 3 An enlarged schematic diagram of the structure at A is shown;
[0017] Figure 5 This is a schematic diagram of the structure of the utility model in which the cutter does not cut off the glue inlet;
[0018] Figure 6 It is a structural schematic diagram of the utility model in which a cutter cuts off a glue inlet.
[0019] Among them: 1. Lower mold base; 2. Upper mold base; 3. Lower mold core; 4. Upper mold core; 5. Mold cavity; 6. Glue injection hole; 7. Runner; 8. Micro cylinder; 9. Ejector rod; 10. Cutter; 11. Oil circuit inside the mold; 12. Glue inlet; 13. Oil circuit joint. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0021] Please refer to Figures 1 to 6 To achieve the above purpose, the utility model provides the following technical solutions:
[0022] An injection mold capable of cutting off a glue inlet in a film comprises a lower mold base 1 and an upper mold base 2, wherein a lower mold core 3 protruding upward is provided at the middle position of the top of the lower mold base 1; an upper mold core 4 matched with the lower mold core 3 is provided at the middle position of the bottom of the upper mold base 2, wherein the upper mold core 4 and the lower mold core 3 are combined to form a mold cavity 5; a glue injection hole 6 connected to the lower surface of the upper mold core 4 is provided at the middle position of the top of the upper mold base 2, wherein the glue injection hole 6 penetrates downward through the upper mold core 4 and is connected to the mold cavity 5; a flow channel 7 is provided at the middle position of the mold cavity 5, wherein the flow channel 7 is connected to the bottom of the glue injection hole 6; a micro-cylinder 8 is fixedly installed at the bottom of the lower mold base 1, wherein the top end of the piston rod of the micro-cylinder 8 is fixedly connected to a push rod 9; the push rod 9 is vertically arranged, and a cutter 10 is provided at the top end of the push rod 9, wherein the cutter 10 penetrates upward through the lower mold core 3 and is connected to the mold cavity 5. The shape of the product part is formed by injecting hot melt liquid into the gap of the mold cavity 5 from the glue injection hole 6, and then the part product is pressurized. At the beginning of cooling and shaping, the micro-cylinder 8 drives the push rod 9 to drive the cutter 10 to move upward, so that the blade at the top of the cutter 10 moves upward close to the side of the mold cavity 5, and the cutter 10 begins to complete the feeding action. At this time, the glue has not been completely solidified, and the cutter 10 can achieve a "hot" cutting effect, which is convenient for cutting the glue at the glue inlet 12. Then the cutter 10 is controlled to remain at the position of the product part and the glue inlet 12 until the product part is cooled. The micro-cylinder 8 is controlled to drive the push rod 9 to drive the cutter 10 to shrink downward into the lower mold core 3 to complete the separation of the part product and the glue inlet 12. Finally, the mold is opened to take out the part product, thereby achieving the effect of film internal cutting of the part product.
[0023] Please refer to Figure 5 , Figure 6 As an embodiment of the utility model, the cross-section of the top blade of the cutter 10 is a right triangle, wherein a right-angled side of the cutter 10 is in contact with the side of the mold cavity 5 , and the inclined side of the cutter 10 is close to the glue inlet 12 .
[0024] In the above-described scheme, by setting the blade of the cutter 10 into a right-angled triangle, the entire right-angled surface of the cutter 10 is close to the side of the mold cavity 5, and the cutting surface is flat, which facilitates the cutter 10 to quickly and effectively cut the rubber at the glue inlet 12, and the cutting position of the part product is smooth and traceless, thereby improving the cutting quality of the part product.
[0025] Please refer to Figures 2 to 4As an embodiment of the utility model, the mold cavity 5 is provided with two groups and is symmetrically arranged, wherein the two groups of mold cavities 5 are respectively connected with the two ends of the flow channel 7; an internal mold oil circuit 11 is provided inside the lower mold base 1, wherein the micro-oil cylinder 8 is connected with the internal mold oil circuit 11; a glue inlet 12 is provided between the flow channel 7 and the mold cavity 5; a cutter 10 is arranged below the glue inlet 12, wherein the width of the cutter 10 is the same as the width of the glue inlet 12.
[0026] In the above-described scheme, an oil circuit connector 13 is provided at the end of the oil circuit 11 in the mold, wherein the oil circuit connector 13 is connected to the oil pipe of an external injection molding machine (not shown), the injection molding machine is electrically connected to the timing controller, and a touch switch is installed on the side of the lower mold base 1, wherein the touch switch and the micro-oil cylinder 8 are electrically connected to the timing controller respectively; in this embodiment, the touch switch and the timing controller are conventional electronic products, so they are not described again; by closing the upper mold base 2 and the lower mold base 1, wherein the touch switch transmits the closing signal to the timing controller, thereby controlling the cutter 10 to be in the retracting position, and then injecting the hot melt liquid from the injection hole 6 at the top of the upper mold base 2 through the flow channel 7 respectively. The plastic material is put into the gap of the mold cavity 5 to form the shape of the product part, and then the pressure is maintained. When the pressure is maintained, the injection molding machine sends a signal to the timing controller, wherein the timing controller controls the micro-cylinder 8 to drive the cutter 10 to move upward close to the side of the mold cavity 5 and start to complete the feeding action, thereby cutting off the glue at the glue inlet 12, and then controls the cutter 10 to remain at the position of the product part and the glue inlet 12 until the product part is cooled. The injection molding machine sends a signal to the timing controller, wherein the timing controller controls the micro-cylinder 8 to drive the push rod 9 to drive the cutter 10 to complete the retraction action. At this time, the part product and the glue inlet 12 have been separated, and the mold can be opened to take out the part product.
[0027] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.
Claims
1. An injection mold capable of cutting off a glue inlet in a film, comprising a lower mold base (1) and an upper mold base (2), wherein a lower mold core (3) protruding upward is provided at the middle position of the top of the lower mold base (1); an upper mold core (4) adapted to the lower mold core (3) is provided at the middle position of the bottom of the upper mold base (2), wherein the upper mold core (4) and the lower mold core (3) are combined to form a mold cavity (5); characterized in that: A glue injection hole (6) communicating with the lower surface of the upper mold core (4) is provided at the middle position of the top of the upper mold base (2), wherein the glue injection hole (6) penetrates downwardly through the upper mold core (4) and is communicated with the mold cavity (5); a flow channel (7) is provided at the middle position of the mold cavity (5), wherein the flow channel (7) is communicated with the bottom of the glue injection hole (6); a micro-cylinder (8) is fixedly installed at the bottom of the lower mold base (1), wherein the top end of the piston rod of the micro-cylinder (8) is fixedly connected to a push rod (9); the push rod (9) is vertically arranged and a cutter (10) is provided at the top end of the push rod (9), wherein the cutter (10) penetrates upward through the lower mold core (3) and is communicated with the mold cavity (5).
2. The injection mold capable of cutting off the glue inlet in the film according to claim 1, characterized in that: The mold cavities (5) are provided in two groups and are symmetrically arranged, wherein the two groups of mold cavities (5) are respectively connected to two ends of the flow channel (7).
3. The injection mold capable of cutting off the glue inlet in the film according to claim 1, characterized in that: An internal mold oil circuit (11) is provided inside the lower mold base (1), wherein the micro oil cylinder (8) is connected to the internal mold oil circuit (11).
4. The injection mold capable of cutting off the glue inlet in the film according to claim 1, characterized in that: A glue inlet (12) is provided between the flow channel (7) and the mold cavity (5).
5. The injection mold capable of cutting off the glue inlet in the film according to claim 1, characterized in that: The cutter (10) is arranged below the glue inlet (12), wherein the width of the cutter (10) is the same as the width of the glue inlet (12).
6. The injection mold capable of cutting off the glue inlet in the film according to claim 5, characterized in that: The cross section of the top blade of the cutter (10) is a right triangle, wherein one right-angled side of the cutter (10) is in contact with the side of the mold cavity (5), and the inclined side of the cutter (10) is close to the glue inlet (12).