Demolding structure convenient for forced demolding of inverted buckle of threaded product

Abstract

The utility model relates to a demoulding structure convenient for forcibly demoulding an inverted buckle of a threaded product, which comprises a movable mould, a mould core arranged on the lower side of the movable mould, a fixed mould arranged on the lower side of the mould core, a forming component arranged on the mould core, a processed product arranged inside the forming component, a mould core arranged on the upper side wall of the processed product and connected with the movable mould in a sliding manner, according to the demolding device, when a machined product is demolded, the hydraulic rod drives the mold body and the inverted buckling plate to enable the mold body to be completely separated from the machined product, then the mold core is jacked to enable the machined product to be demolded, the demolding sequence is divided into two steps, and therefore the machined product is prevented from being damaged; and meanwhile, the guide cylinder can rotate when sliding in a sliding hole through the design of the sliding hole in the guide cylinder and the back-off plate, so that the friction force between the guide cylinder and the sliding hole is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to a demoulding structure, in particular to a demoulding structure applied in the field of mold technology, which is convenient for threaded products to be strongly demoulded by undercutting. Background Art

[0002] Due to the various changes in the structure of current products and the diversity of styles, it is impossible to achieve automated production by using injection molding machines for many products with special structures. For example, when some silicone products or plastic products have an undercut shape or structure, they cannot be automatically demolded after the injection molding process is completed. The undercut structure will cause the workpiece to be buckled on the mold, so it is necessary to manually handle it or use an ejector device, resulting in low production efficiency and product quality being damaged by the ejector device and cannot be guaranteed. For example, the current more advanced inclined top demolding mold drives the product in the cavity to rise while the inclined top shrinks inward to complete demolding. At this time, the long slot hole of the inclined top generates an oblique force on the positioning pin. Since one end of the undercut inclined top is close to the vertical edge, the undercut inclined top cannot complete synchronous movement with the inclined top. The vertical force of the component of the oblique force pushes the positioning pin to drive the inverted inclined top to accelerate upward movement, thereby completing the separation of the inverted inclined top and the inverted position in the cavity. The inclined top demolding structure not only has complex mold processing and high production costs, but also leaves a parting line on the product, affecting the aesthetics of the product.

[0003] In order to meet the needs of product functions, holes or buckles in different directions are designed on the front and back surfaces of the product. Some buckles cannot be demolded in one direction and need to be converted by other mechanisms to achieve the purpose of complete demolding. When existing threaded products are demolded, it is difficult to demold the products due to the shape design required on the outside of some products, and they are even prone to damage during the demolding process.

[0004] To this end, the applicant proposes a demoulding structure that facilitates strong demoulding of threaded products. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a device that can, when the processed product is to be demolded, drive the mold body and the undercut plate through a hydraulic rod to completely separate the mold body from the processed product, and then push the mold core to demold the processed product, and divide the demolding sequence into two steps, thereby avoiding damage to the processed product and improving the product quality of the processed product. At the same time, through the design of the guide cylinder and the sliding hole in the undercut plate, the guide cylinder can rotate when sliding inside the sliding hole, thereby reducing the friction between the guide cylinder and the sliding hole and increasing the service life of the device.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A demoulding structure which facilitates the strong demoulding of threaded products by undercutting, comprises a movable mold, a mold core is installed on the lower side of the movable mold, a fixed mold is installed on the lower side of the mold core, a molding assembly is installed on the mold core, a processed product is arranged inside the molding assembly, a mold core is arranged on the upper side wall of the processed product, and the mold core is slidably connected to the movable mold, an annular plate is fixedly connected to the side wall of the mold core, the molding assembly comprises a mold cavity installed on the mold core, a fixing rod is fixedly connected between the mold cavity and the mold core, a plurality of mold bodies are inserted into the mold cavity, the ends of the plurality of mold bodies which are separated from each other are fixedly connected with an undercut plate, an inclined sliding hole is drilled on the undercut plate, and a transmission assembly is sleeved on the mold cavity.

[0010] Furthermore, the transmission assembly includes a movable ring plate sleeved on the mold cavity, and a plurality of groups of vertical plates are fixedly connected to the lower side wall of the movable ring plate. A guide cylinder is rotatably connected between each group of vertical plates, and the guide cylinder is located inside the sliding hole.

[0011] Furthermore, a hydraulic rod is installed inside the fixed mold, and a lifting assembly is installed on the upper end of the hydraulic rod. The lifting assembly includes a lifting platform, and two ejector pins are slidably connected to the lifting platform, and the two ejector pins are symmetrically arranged.

[0012] Furthermore, a slide groove matching the ejector pin is bored on the lifting platform, and a connecting spring is installed inside the slide groove, and two ends of the connecting spring are respectively fixedly connected to the ejector pin and the lifting platform.

[0013] Furthermore, a notch is cut on the ejector pin, and the notch abuts against the movable ring plate; a notch is cut on the mold core, and the notch matches the movable ring plate.

[0014] Furthermore, the width of the sliding hole is greater than the diameter of the guide cylinder, and a rubber layer is fixedly connected to the inner wall of the sliding hole.

[0015] Furthermore, the two ejector pins are both located on one side of the undercut plate.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) This solution can drive the mold body and the undercut plate through the hydraulic rod to completely separate the mold body from the processed product when the processed product is demolded, and then push the mold core to demold the processed product. The demolding sequence is divided into two steps, thereby avoiding damage to the processed product and improving the product quality of the processed product.

[0019] (2) This solution can make the guide sleeve rotate when sliding inside the sliding hole through the design of the sliding hole in the guide sleeve and the undercut plate, thereby reducing the friction between the guide sleeve and the sliding hole and improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional image of the present application;

[0021] Figure 2 This is a schematic diagram of the structure of the mold core part of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the lifting component of this application;

[0023] Figure 4 This is a schematic diagram of the structure inside the mold core of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the molding component part of this application;

[0025] Figure 6 This is a diagram of the product being demoulded for this application.

[0026] Description of the numbers in the figure:

[0027] 1. Moving mold; 2. Mold core; 3. Fixed mold; 301. Hydraulic rod; 4. Molding assembly; 401. Mold cavity; 402. Mold body; 403. Undercut plate; 404. Slide hole; 405. Fixed rod; 5. Processed product; 6. Mold core; 601. Ring plate; 7. Transmission assembly; 701. Moving ring plate; 702. Vertical plate; 703. Guide cylinder; 8. Lifting assembly; 801. Lifting platform; 802. Ejector pin; 803. Connecting spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Example 1

[0032] See also Figure 1-3 A demoulding structure that facilitates the strong demoulding of a product with a threaded part, comprising a movable mold 1, a mold core 2 is installed on the lower side of the movable mold 1, a fixed mold 3 is installed on the lower side of the mold core 2, the structure and principle of the fixed mold 3 are all prior art, and are not repeated here, a molding component 4 is installed on the mold core 2, a processed product 5 is arranged inside the molding component 4, a mold core 6 is arranged on the upper side wall of the processed product 5, and the mold core 6 is slidably connected to the movable mold 1, and an annular plate 601 is fixedly connected to the side wall of the mold core 6, and the molding component 4 includes a mold cavity 4 installed on the mold core 2 01. The shape of the mold cavity 401 can be adjusted according to the shape of the product and then installed on the mold core 2. The structure and principle of the mold cavity 401 are all existing technologies and will not be repeated here. A fixing rod 405 is fixedly connected between the mold cavity 401 and the mold core 2. A plurality of mold bodies 402 are plugged into the mold cavity 401. The ends of the plurality of mold bodies 402 that are separated from each other are fixedly connected with an undercut plate 403. The undercut plate 403 is provided with an inclined sliding hole 404. A transmission component 7 is sleeved on the mold cavity 401.

[0033] The transmission assembly 7 includes a movable ring plate 701 mounted on the mold cavity 401, and a plurality of groups of vertical plates 702 are fixedly connected to the lower side wall of the movable ring plate 701. A guide cylinder 703 is rotatably connected between each group of vertical plates 702. Each group of vertical plates 702 includes two fixed plates, which are rotatably connected to the guide cylinder 703. The guide cylinder 703 is located inside the sliding hole 404, and can drive the mold body 402 and the undercut plate 403 to extend and retract at the mold cavity 401 when the transmission assembly 7 moves, thereby facilitating the demolding of the processed product 5.

[0034] A hydraulic rod 301 is installed inside the fixed mold 3, and a lifting assembly 8 is installed on the upper end of the hydraulic rod 301. The lifting assembly 8 includes a lifting platform 801. Two ejector pins 802 are slidably connected to the lifting platform 801, and the two ejector pins 802 are symmetrically arranged.

[0035] Example 2

[0036] The utility model provides a demoulding structure that facilitates the strong demoulding of threaded products, wherein the components that are the same or corresponding to those in embodiment 1 are marked with the corresponding reference numerals of embodiment 1. For the sake of simplicity, only the differences from embodiment 1 are described below. Please refer to Figure 4-6 A slide groove matching the ejector pin 802 is bored on the lifting platform 801, and a connecting spring 803 is installed inside the slide groove, and both ends of the connecting spring 803 are fixedly connected to the ejector pin 802 and the lifting platform 801 respectively.

[0037] A notch is bored on the ejector pin 802, and the notch abuts against the movable ring plate 701. When the ejector pin 802 abuts against the movable ring plate 701, the top of the ejector pin 802 does not contact the annular plate 601, thereby preventing the mold body 402 from being fully retracted when the processed product 5 is demolded, causing damage to the processed product 5. A notch is bored on the mold core 2, and the notch matches the movable ring plate 701.

[0038] The width of the sliding hole 404 is greater than the diameter of the guide cylinder 703 , and a rubber layer is fixedly connected to the inner wall of the sliding hole 404 , which enables the guide cylinder 703 to rotate when sliding inside the sliding hole 404 , thereby reducing the friction between the guide cylinder 703 and the sliding hole 404 .

[0039] The two ejector pins 802 are both located on one side of the undercut plate 403. After the mold body 402 and the undercut plate 403 are fully retracted, the undercut plate 403 can push the ejector pins 802 to move, and then push the mold core 6 upward to demold the processed product 5 and avoid damage to the processed product 5.

[0040] Working principle:

[0041] When using the device, first, the pouring material is injected into the gap between the molding component 4 and the mold core 6 through the gate. The gate is installed at the bottom of the molding component 4. The structure and principle of the gate and the injection equipment are all existing technologies and will not be repeated here. After the pouring material solidifies, the processed product 5 is formed. Through the thread structure at the bottom of the mold core 6, the inner wall of the processed product 5 is also formed with a thread groove;

[0042] Then, the fixed mold 3 pushes the lifting assembly 8 to move upward through the hydraulic rod 301, and the lifting platform 801 drives the transmission assembly 7 to move upward through the ejector pin 802, so that the movable ring plate 701 and the vertical plate 702 drive the guide cylinder 703 to move upward, and the upward movement of the guide cylinder 703 will drive the undercut plate 403 to move to the outside of the mold cavity 401, and then pull the mold body 402 out of the mold cavity 401, until the mold body 402 is completely separated from the processed product 5, the undercut plate 403 will push the ejector pin 802 to move, so that the notch of the ejector pin 802 is separated from the movable ring plate 701, and as the lifting assembly 8 continues to move upward, the ejector pin 802 pushes the annular plate 601 and the mold core 6 to move upward, and then the processed product 5 is brought out through the thread of the mold core 6, as shown in FIG. Figure 6 As shown, it is convenient for the staff to take out the processed product 5;

[0043] After the production of the product is completed, the hydraulic rod 301 pulls the lifting assembly 8 down again. When the notch of the ejector pin 802 moves to the side of the movable ring plate 701, the ejector pin 802 is reset by the thrust of the connecting spring 803, and the next work can be carried out again.

[0044] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A demoulding structure for facilitating strong demoulding of a product with a thread, comprising a movable mold (1), characterized in that: A mold core (2) is installed at the lower side of the movable mold (1), a fixed mold (3) is installed at the lower side of the mold core (2), a molding assembly (4) is installed on the mold core (2), a processed product (5) is arranged inside the molding assembly (4), a mold core (6) is arranged on the upper side wall of the processed product (5), and the mold core (6) is slidably connected to the movable mold (1), an annular plate (601) is fixedly connected to the side wall of the mold core (6), and the molding assembly (4) includes a mold core (6) installed on the mold core (6). A mold cavity (401) is provided on a mold core (2), a fixing rod (405) is fixedly connected between the mold cavity (401) and the mold core (2), a plurality of mold bodies (402) are plugged into the mold cavity (401), and opposite ends of the plurality of mold bodies (402) are fixedly connected with an undercut plate (403), an inclined sliding hole (404) is bored on the undercut plate (403), and a transmission assembly (7) is sleeved on the mold cavity (401).

2. A demoulding structure for facilitating strong demoulding of threaded products according to claim 1, characterized in that: The transmission assembly (7) comprises a movable ring plate (701) sleeved on the mold cavity (401), and a plurality of groups of vertical plates (702) are fixedly connected to the lower side wall of the movable ring plate (701), and a guide cylinder (703) is rotatably connected between each group of the vertical plates (702), and the guide cylinder (703) is located inside the sliding hole (404).

3. A demoulding structure for facilitating strong demoulding of threaded products according to claim 1, characterized in that: A hydraulic rod (301) is installed inside the fixed mold (3), and a lifting assembly (8) is installed on the upper end of the hydraulic rod (301). The lifting assembly (8) includes a lifting platform (801), and two ejector pins (802) are slidably connected to the lifting platform (801), and the two ejector pins (802) are symmetrically arranged.

4. A demoulding structure for facilitating strong demoulding of threaded products according to claim 3, characterized in that: The lifting platform (801) is provided with a slide groove matching the ejector pin (802), and a connecting spring (803) is installed inside the slide groove. The two ends of the connecting spring (803) are respectively fixedly connected to the ejector pin (802) and the lifting platform (801).

5. A demoulding structure for facilitating strong demoulding of threaded products according to claim 4, characterized in that: The ejector pin (802) is provided with a notch, and the notch abuts against the movable ring plate (701); the mold core (2) is provided with a notch, and the notch matches the movable ring plate (701).

6. A demoulding structure for facilitating strong demoulding of threaded products according to claim 2, characterized in that: The width of the sliding hole (404) is greater than the diameter of the guide cylinder (703), and a rubber layer is fixedly connected to the inner wall of the sliding hole (404).

7. A demoulding structure for facilitating strong demoulding of threaded products according to claim 3, characterized in that: The two ejector pins (802) are both located on one side of the undercut plate (403).

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