Ejection structure of in-mold hot cutting forming mold

Abstract

The utility model discloses an ejection structure of an in-mold hot cutting forming mold, relates to the field of in-mold hot cutting, and aims to solve the technical problems that in the prior art, an ejection structure of an existing forming mold only can eject an injection-molded product, and after in-mold hot cutting is carried out, an edge strip is separated from the product, so that the edge strip still remains in an injection molding groove after the product is ejected, and the product cannot be subjected to injection molding. And the edge strip needs to be removed again, which is troublesome. A lifting plate is arranged in the first movable groove, a circular tube type cutter is fixedly connected to the middle of the upper end of the lifting plate, a first electric push rod is fixedly arranged in the middle of the interior of the first mounting groove, and first hydraulic rods are fixedly arranged in the first mounting groove and located on the two sides of the first electric push rod; a second hydraulic rod is fixedly arranged on one side of the interior of the second mounting groove, the telescopic end of the upper end of the second hydraulic rod extends into the second movable groove and is fixedly connected with a rectangular cutter, and a second electric push rod is fixedly arranged on the other side of the interior of the second mounting groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of in-mold hot cutting, in particular to a ejection structure of in-mold hot cutting forming die. BACKGROUND

[0002] In-mold hot cutting is an advanced mold injection automation technology, which shears or breaks the gate inside the mold, so that the product is automatically separated after the mold is opened. This technology uses micro ultra-high pressure oil cylinder module and high-speed high-pressure cutter module, combined with precise timing control system, to realize full-automatic gate separation during injection molding. In-mold hot cutting can simplify the mold structure, improve production efficiency, and ensure the consistency of product quality. In the electronics, electrical appliances, medical, automotive and other industries, in-mold hot cutting technology has been widely used, bringing revolutionary changes to mold injection automation production.

[0003] For example, the authorized announcement number CN212045795U discloses an in-mold hot cutting die, which comprises a female die and a male die, a gate is formed between the female die and the male die, the two ends of the gate lead to a workpiece, the female die is provided with an inlet communicating with the gate, the top of the male die is provided with a protrusion, the two sides of the protrusion are provided with guide blocks, a cutter is slidably connected in the guide blocks, the top of the cutter is arranged at the bottom of one end of the gate, so that the cutter can separate the gate material at both ends from the workpiece, and the bottom of the cutter is provided with a pushing device; the utility model sets the cutter in the mold to cut off the edge material, reduces the work procedure, improves the work efficiency, and uses hydraulic cylinder for hot cutting, which reduces the difficulty of cutting and makes the product less deformed, thereby greatly improving the quality of the product.

[0004] The existing ejection structure of forming die can only eject the injection molded product, and after in-mold hot cutting, the edge strip is separated from the product, so that the edge strip will still remain in the injection slot after the product is ejected, and the edge strip needs to be removed again, which is troublesome; therefore, there is an urgent need in the market to develop an ejection structure of in-mold hot cutting forming die to help people solve the existing problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an ejection structure of in-mold hot cutting forming die to solve the problem that the existing ejection structure of forming die can only eject the injection molded product, and after in-mold hot cutting, the edge strip is separated from the product, so that the edge strip will still remain in the injection slot after the product is ejected, and the edge strip needs to be removed again, which is troublesome.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of ejection structure of in-mold hot cutting forming die, including lower mould, the middle part of lower mould upper end surface is provided with injection slot, lower mould upper end surface is connected with edge strip groove in the middle part of both sides of injection slot, the upper end of the middle part in the inside of lower mould is provided with first movable slot, first movable slot is provided with lifting plate, the middle part of the upper end of lifting plate is fixedly connected with round pipe type cutter, the lower end of first movable slot in the inside of lower mould is provided with first installation slot, the middle part in the inside of first installation slot is fixedly provided with first electric push rod, the both sides of first electric push rod in the inside of first installation slot are fixedly provided with first hydraulic rod, the both sides of first movable slot in the inside of lower mould are provided with second movable slot, second movable slot is connected with second installation slot, one side in the inside of second installation slot is fixedly provided with second hydraulic rod, the telescopic end of the upper end of second hydraulic rod extends to the inside of second movable slot and is fixedly connected with rectangular cutter, the other side in the inside of second installation slot is fixedly provided with second electric push rod, lower mould upper end is provided with lower mould.

[0007] Preferably, the middle part between the first movable slot and the injection slot is communicated with a circular through slot, and the upper end of the round pipe type cutter is inserted into the inside of the circular through slot and extends to the lower end surface of the injection slot.

[0008] Preferably, the upper end of the lifting plate is provided with a first spring on both sides, the telescopic end of the two first hydraulic rods extends to the inside of the first movable slot and is fixedly connected with the lower end surface of the lifting plate, and the telescopic end of the first electric push rod is inserted into the inside of the round pipe type cutter and extends to the lower end surface of the injection slot.

[0009] Preferably, the two second movable slots are respectively communicated with the rectangular through slots between the two edge strip grooves and the connection portions with the injection slot, and the upper end of the rectangular cutter is inserted into the inside of the rectangular through slot and extends to the lower end surface of the edge strip groove.

[0010] Preferably, the second hydraulic rod is provided with a second spring in the inside of the second movable slot.

[0011] Preferably, the telescopic end of the second electric push rod extends to the lower end surface in the inside of the edge strip groove through the lower mould.

[0012] Preferably, the middle part in the inside of the upper mould is provided with an injection hole, and the injection hole is vertically aligned with the round pipe type cutter.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses, through the synchronous cutting design of round pipe type cutter and rectangular cutter, realized the synchronous cutting of injection molding product and injection molding hole injection plastic and edge strip, and keep part connection, facilitate the synchronous ejection operation of subsequent, this design not only improves the cutting efficiency, guarantees the flatness of cutting surface and product quality.

[0015] The utility model discloses, through the synchronous ejection design of first electric push rod and second electric push rod, realized the synchronous, automatic and high -efficient ejection of injection molding product and edge strip, greatly simplified the subsequent processing flow, reduced the artificial operation difficulty and cost, simultaneously, this design also improved production efficiency, made the circulation use of mould more fast and convenient.

[0016] The utility model discloses, through the setting of first spring and second spring, realized the effective reset function after cutting and ejection operation. First spring is located between the lifting plate and lower mould, can assist the lifting plate to return to the initial position stably after the cutting of round pipe type cutter, ensure the accurate reset of cutting mechanism. Similarly, second spring is then used to rectangular cutter and its drive mechanism, makes rectangular cutter after the edge strip cutting can reset smoothly, prepares for the next operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the front view of the ejection structure of the in-mould hot cutting forming die of the utility model;

[0018] Figure 2 It is the main sectional view of the utility model;

[0019] Figure 3 It is the side sectional view of the utility model;

[0020] Figure 4 It is the main sectional view of the lower mould of the utility model.

[0021] In the drawing: 1, lower mould; 101, injection molding groove; 102, edge strip groove; 103, first movable groove; 104, round through groove; 105, second movable groove; 106, rectangular through groove; 107, first installation groove; 108, second installation groove; 2, lifting plate; 201, round pipe type cutter; 202, first spring; 203, first hydraulic rod; 204, first electric push rod; 3, second hydraulic rod; 301, rectangular cutter; 302, second spring; 4, second electric push rod; 5, upper mould; 501, injection hole. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Please refer to Figures 1-4 The utility model provides an embodiment: a kind of ejection structure of in-mold hot cutting forming mould, including lower mould 1, the lower mould 1 upper end is provided with lower mould 1, the middle part of the inside of upper mould 5 is provided with injection hole 501, the middle part of the upper surface of lower mould 1 is provided with injection groove 101, the upper surface of lower mould 1 is connected with edge groove 102 in the middle part of both sides of injection groove 101, the middle part of the inside of lower mould 1 is provided with first movable slot 103 in upper end, first movable slot 103 is provided with lifting plate 2, lifting plate 2 upper end middle part is fixedly connected with round tube type cutter 201, first movable slot 103 and injection groove 101 are communicated with circular through slot 104 in middle part, round tube type cutter 201 upper end inserts into the inside of circular through slot 104 and extends to with the lower end surface of injection groove 101, injection hole 501 is vertically aligned with round tube type cutter 201, first installation groove 107 is provided in the inside of lower mould 1 and in the lower end of first movable slot 103, first installation groove 107 inside middle part is fixedly provided with first electric push rod 204, first installation groove 107 inside and in the both sides of first electric push rod 204 are fixedly provided with first hydraulic rod 203, lifting plate 2 upper end both sides are provided with first spring 202, the telescopic end of two first hydraulic rods 203 is extended to the inside of first movable slot 103 and is fixedly connected with the lower end surface of lifting plate 2, the telescopic end of first electric push rod 204 inserts into the inside of round tube type cutter 201 and extends to with the lower end surface of injection groove 101, raw material is injected into the inside of injection groove 101, makes injection groove 101 and edge groove 102 synchronous injection, when injection is completed, lifting plate 2 is pushed up synchronously by two first hydraulic rods 203 and first spring 202 is compressed simultaneously, in turn make lifting plate 2 rise and drive round tube type cutter 201 to extend into injection groove 101 and cut off between the injection material of injection hole 501 position and product, by controlling the distance of round tube type cutter 201 extension, make round tube type cutter 201 keep part connection when cutting between injection material and product, when product cools down, after upper mould 5 is lifted, injection material of injection hole 501 position and product are synchronously ejected by the telescopic end of first electric push rod 204, realize product ejection, realize that injection material of injection hole 501 position and product are synchronously ejected, when product is ejected, injection material of injection hole 501 position can be completely separated from product by synchronous pressing.

[0024] Please refer to Figures 2-4The lower mold 1 is internally provided with the second movable slot 105 on both sides of the first movable slot 103, and the second movable slot 105 is connected with the second installation slot 108 at the lower end, and the second hydraulic rod 3 is fixedly arranged at one side of the second installation slot 108, and the upper end of the second hydraulic rod 3 extends into the second movable slot 105 and is fixedly connected with the rectangular cutter 301, and the second electric push rod 4 is fixedly arranged at the other side of the second installation slot 108, and the rectangular through slot 106 is communicated between the two second movable slots 105 and the connecting positions of the two edge slot 102 and the injection slot 101, the upper end of the rectangular cutter 301 is inserted into the rectangular through slot 106 and extends to the lower end surface of the edge slot 102, the second spring 302 is arranged at the upper end of the second hydraulic rod 3 in the second movable slot 105, and the telescopic end of the second electric push rod 4 extends to the lower end surface in the edge slot 102 through the lower mold 1, the upper end of the rectangular cutter 301 is pushed into the edge slot 102 by the second hydraulic rod 3 to cut the connecting position between the injected edge and the product, and the rising distance of the rectangular cutter 301 is controlled to keep part of the connection when the rectangular cutter 301 cuts the connecting position between the injected edge and the product, after the product is cooled, the second electric push rod 4 and the first electric push rod 204 work synchronously after the upper mold 5 is lifted, the telescopic end of the second electric push rod 4 extends into the edge slot 102 to lift the edge, the edge is ejected, the edge is partially connected with the product when the edge is ejected, the product is moved out of the injection slot 101 synchronously when the two edges are ejected, the product and the edge are synchronously ejected, and the edge and the product are separated by bending the edge after the product and the edge are synchronously ejected.

[0025] Working principle: in use, first, the raw materials are injected into the injection slot 101 and the edge slot 102 through the injection hole 501. After the injection is completed, the control system triggers the synchronous start of the first hydraulic rod 203 and the second hydraulic rod 3. The first hydraulic rod 203 pushes the lifting plate 2 to rise and compresses the first spring 202, while the lifting plate 2 drives the circular tube type cutter 201 (located in the first movable slot 103 and extends into the injection slot 101 through the circular through slot 104) to move upwards, cutting off the connection between the injection material at the position of the injection hole 501 and the product, while the cutting operation of the circular tube type cutter 201 keeps part of the connection between the injection material and the product. At the same time, the second hydraulic rod 3 also pushes the rectangular cutter 301 (located in the second movable slot 105 and extends into the edge slot 102 through the rectangular through slot 106) to move upwards, cutting off the connection between the injected edge and the product, also keeping part of the connection. At this time, the second spring 302 plays a buffering and resetting role. In this way, the cutting operations of the circular tube type cutter 201 and the rectangular cutter 301 are synchronous. When the product cools down, the upper mold 5 is lifted, at this time, the first electric push rod 204 (located in the first mounting slot 107) and the second electric push rod 4 (whose telescopic end penetrates the lower mold 1 and extends into the edge slot 102) also work synchronously. The telescopic end of the first electric push rod 204 extends out, synchronously lifts the injection material at the position of the injection hole 501 through the hollow part of the circular tube type cutter 201, and realizes the preliminary ejection of the product. At the same time, the telescopic end of the second electric push rod 4 also extends out and lifts the edge. Since the edge and the product still maintain part of the connection, the ejection of the edge will synchronously drive the product to move out of the injection slot 101, realizing the synchronous, automatic and efficient ejection of the product and the edge, greatly simplifying the subsequent processing process.

[0026] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An ejection structure of an in-mold thermo-cut forming mold, comprising a lower mold (1), characterized in that: The lower mold (1) upper end face middle part is provided with injection slot (101), the lower mold (1) upper end face and in injection slot (101) both sides middle part are connected with the edge strip slot (102), the lower mold (1) inside middle part upper end is provided with first movable slot (103), the first movable slot (103) is provided with lifting plate (2) inside, the lifting plate (2) upper end middle part is fixedly connected with round pipe type cutter (201), the lower mold (1) inside and in first movable slot (103) lower end is provided with first installation slot (107), the first installation slot (107) inside middle part is fixedly provided with first electric push rod (204), the first installation slot (107) inside and in first electric push rod (204) both sides are fixedly provided with first hydraulic rod (203), the lower mold (1) inside and in first movable slot (103) both sides are provided with second movable slot (105), the second movable slot (105) lower end is connected with second installation slot (108), the second installation slot (108) inside one side is fixedly provided with second hydraulic rod (3), the second hydraulic rod (3) upper end telescopic end extends to second movable slot (105) inside and is fixedly connected with rectangular cutter (301), the second installation slot (108) inside other side is fixedly provided with second electric push rod (4), the lower mold (1) upper end is provided with upper mold (5).

2. The ejection structure of an in-mold thermo-cut forming mold according to claim 1, characterized by: The first movable slot (103) and injection slot (101) middle part are communicated with circular through slot (104), the round pipe type cutter (201) upper end is inserted into circular through slot (104) inside and extends to with injection slot (101) lower end face.

3. The ejection structure of an in-mold thermal cutting forming mold according to claim 2, characterized by: The lifting plate (2) upper end both sides are provided with first spring (202), the telescopic end of two first hydraulic rod (203) extends to first movable slot (103) inside and is fixedly connected with lifting plate (2) lower end face, the telescopic end of first electric push rod (204) is inserted into round pipe type cutter (201) inside and extends to with injection slot (101) lower end face.

4. The ejection structure of an in-mold thermal cutting forming mold according to claim 1, characterized by: Two second movable slot (105) are communicated with two edge strip slot (102) and injection slot (101) connection place between rectangular through slot (106) respectively, the rectangular cutter (301) upper end is inserted into rectangular through slot (106) inside and extends to edge strip slot (102) lower end face.

5. The ejection structure of an in-mold thermal cutting forming mold according to claim 1, characterized by: The second hydraulic rod (3) upper end is provided with second spring (302) inside second movable slot (105).

6. The ejection structure of an in-mold thermal cutting forming mold according to claim 1, characterized by: The telescopic end of second electric push rod (4) extends to edge strip slot (102) inside lower end face through the lower mold (1).

7. The ejection structure of an in-mold thermal cutting forming mold according to claim 1, characterized by: The upper mold (5) inside middle part is provided with injection hole (501), the injection hole (501) is vertically aligned with round pipe type cutter (201).

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