Sprue-free waste injection mold structure

Abstract

The utility model discloses a sprue-free waste injection mold structure which comprises an upper mold base and a lower mold base, a top plate and a base are fixedly arranged on the outer side of the upper mold base and the outer side of the lower mold base respectively, an upper mold box and a lower mold box are arranged in the upper mold base and the lower mold base respectively, and guide frames are arranged on the front sides and the rear sides of the upper mold base and the lower mold base respectively. A first positioning pin and a second positioning pin are slidably arranged in the guide frame, the first positioning pin and the second positioning pin are fixedly connected to the upper mold base and the lower mold base correspondingly, a cooling assembly is arranged in the lower mold box, a positioning ring is fixedly arranged on the upper end face of the top plate, and a sprue is arranged in the positioning ring; and second bolts are arranged on the two sides of the top plate in a threaded mode correspondingly, four guide rods are arranged on the upper end face of the lower mold base and penetrate through the interior of the upper mold base, relative accurate alignment of the positions of the upper mold base and the lower mold base during injection molding and extrusion can be achieved, the machining precision of injection molding parts is improved, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold structure without gate waste. Background Art

[0002] Molds are the various molds and tools used in industrial production to produce desired products through methods such as injection molding, blow molding, extrusion, die-casting, forging, smelting, and stamping. Simply put, a mold is a tool used to create a shaped object. This tool is composed of various parts, and different molds are made up of different parts. It primarily shapes the object by changing the physical state of the material being molded. It is often called the "mother of industry."

[0003] There are some problems in the use of existing gateless waste injection molds. Injection molding is often performed directly by engaging the upper and lower molds, which can easily cause deviations during the hydraulic processing of the injection molded parts and prevent the upper and lower molds from being accurately engaged and aligned, thereby reducing the processing accuracy of the injection molded parts. In response to the above problems, a gateless waste injection mold structure is proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of the utility model is to provide a gate-free waste injection mold structure to solve the problems raised in the above background technology.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] A gate-free waste injection mold structure is designed, including an upper mold base and a lower mold base, wherein a top plate and a base are fixedly provided on the outer sides of the upper mold base and the lower mold base respectively, an upper mold box and a lower mold box are provided inside the upper mold base and the lower mold base respectively, and guide frames are provided on the front and back sides, a first positioning pin and a second positioning pin are slidingly provided inside the guide frame respectively, the first positioning pin and the second positioning pin are fixedly connected to the upper mold base and the lower mold base respectively, and a cooling component is provided inside the lower mold box.

[0007] Furthermore, a positioning ring is fixedly provided on the upper end surface of the top plate and a nozzle is provided inside the positioning ring. The lower side of the nozzle is connected to the upper mold box, and second bolts are threadedly provided on both sides of the top plate.

[0008] Furthermore, four guide rods are provided on the upper end surface of the lower die base, and the four guide rods pass through the interior of the upper die base. Positioning columns are provided on both sides of the upper end of the lower die base, and the positioning columns are clamped in the cavity opened in the interior of the upper die base.

[0009] Furthermore, first bolts are respectively threadedly connected to both sides of the outer wall of the lower die base, and the outer walls of the first bolt and the second bolt are sleeved with clamping plates, and buffer frames are provided on both sides of the interior of the lower die base.

[0010] Furthermore, damping rods are provided on both sides of the buffer frame inside the lower die base, and buffer springs are sleeved on the outer walls of the damping rods, and the bottom of the damping rods is provided on the base.

[0011] Furthermore, the cooling assembly includes a liquid inlet, a solenoid valve and a connecting pipe. The liquid inlet is arranged on the outside of the lower mold base and is fixedly connected to the connecting pipe. The connecting pipe is arranged inside the lower mold box and the extending end is connected to the liquid outlet. The outer walls of the liquid inlet and the liquid outlet are both provided with solenoid valves.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The device of the utility model is provided with a guide frame, a first positioning pin, a positioning column, a guide rod, an upper mold base, a lower mold base, a clamping plate and other components. The clamping plate is fixed to the outer wall of the upper mold base box and the lower mold base by using the first bolt and the second bolt. At the same time, when the upper mold base moves downward, it slides on the guide frame through the first positioning pin, and is limited by the second positioning pin on the lower mold base. The positioning column and the guide rod are used to align the upper mold base and the lower mold base, which is conducive to relatively accurate positioning of the upper mold base and the lower mold base during injection extrusion, avoiding problems such as position deviation affecting the processing size of the injection molded part, improving the mold injection processing accuracy, and having a simple structure.

[0014] 2. The device of the utility model is provided with components such as a liquid inlet, a connecting pipe, a solenoid valve, and a liquid outlet. By putting coolant into the liquid inlet and flowing it to the connecting pipe, and then closing the solenoid valve, the injection molded part is cooled, which is convenient for demoulding and simple to operate.

[0015] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. The embodiments of the present invention include numerous variations, modifications, and equivalents within the spirit and scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a gate-free waste injection mold structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the expanded structure of a gate-free waste injection mold structure of the utility model;

[0019] Figure 3for Figure 2 Schematic diagram of the local flip structure;

[0020] Figure 4 for Figure 2 Schematic diagram of the partially enlarged split structure.

[0021] In the figure: 1. Upper die base; 2. Lower die base; 3. Top plate; 4. Positioning ring; 41. Nozzle; 5. Guide frame; 6. First positioning pin; 7. Second positioning pin; 8. Clamping plate; 81. First bolt; 82. Second bolt; 9. Base; 10. Positioning column; 11. Guide rod; 12. Buffer frame; 13. Damping rod; 14. Upper die box; 15. Lower die box; 16. Cooling assembly; 161. Liquid inlet; 162. Solenoid valve; 163. Connecting pipe; 164. Liquid outlet. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 4 As shown, the present embodiment provides a design of a gate-free waste injection mold structure, comprising an upper mold base 1 and a lower mold base 2, wherein a top plate 3 and a base 9 are fixedly provided on the outer sides of the upper mold base 1 and the lower mold base 2, an upper mold box 14 and a lower mold box 15 are provided inside the upper mold base 1 and the lower mold base 2, and a guide frame 5 is provided on the front and rear sides, a first positioning pin 6 and a second positioning pin 7 are slidingly provided inside the guide frame 5, the first positioning pin 6 and the second positioning pin 7 are fixedly connected to the upper mold base 1 and the lower mold base 2, respectively, and a cooling assembly 16 is provided inside the lower mold box 15.

[0024] Preferably, a positioning ring 4 is fixedly provided on the upper end face of the top plate 3 and a nozzle 41 is provided inside the positioning ring 4. The lower part of the nozzle 41 is connected to the upper mold box 14. A second bolt 82 is threadedly provided on both sides of the top plate 3. Four guide rods 11 are provided on the upper end face of the lower mold base 2, and the four guide rods 11 pass through the interior of the upper mold base 1. Positioning columns 10 are provided on both sides of the upper end of the lower mold base 2 and the positioning columns 10 are clamped in a cavity opened inside the upper mold base 1 to facilitate the relative positioning of the upper mold base 1 and the lower mold base 2 when moving.

[0025] Preferably, the outer walls of the lower mold base 2 are respectively threaded with first bolts 81, and the outer walls of the first bolt 81 and the second bolt 82 are sleeved with a clamping plate 8. Buffer frames 12 are provided on both sides of the interior of the lower mold base 2. Damping rods 13 are provided on both sides of the buffer frame 12 inside the lower mold base 2, and the outer wall of the damping rod 13 is sleeved with a buffer spring, and the bottom of the damping rod 13 is provided on the base 9. The cooling assembly 16 includes a liquid inlet 161, a solenoid valve 162 and a connecting pipe 163. The liquid inlet 161 is provided on the outside of the lower mold base 2 and the liquid inlet 161 is fixedly connected to the connecting pipe 163. The connecting pipe 163 is provided inside the lower mold box 15 and the extending end is connected to the liquid outlet 164. The outer walls of the liquid inlet 161 and the liquid outlet 164 are both provided with solenoid valves 162, which facilitates cooling and cooling of the injection molded parts on the lower mold box 15 and facilitates demolding.

[0026] The working principle and working process of the present invention are as follows: First, the worker drives the upper die base 1 on the top plate 3 to slide and engage along the four guide rods 11, and then pours the injection liquid into the nozzle 41 on the positioning ring 4 to flow to the upper die box 14, and performs extrusion injection molding with the lower die box 15. The first bolt 81 and the second bolt 82 are used to fix the clamping plate 8 on the outer wall of the upper die base 1 and the lower die base 2, so that the upper die base 1 and the lower die base 2 are relatively stable during injection molding to prevent deviation. At the same time, when the upper die base 1 moves downward, it slides on the guide frame 5 through the first positioning pin 6, and the lower die is used to press the upper die base 1 and the lower die base 2 together. The second positioning pin 7 on the base 2 is limited so that the two positioning columns 10 on the lower mold base 2 are engaged with the upper mold base 1, so that the upper mold base 1 and the lower mold base 2 can be relatively accurately aligned during injection extrusion. When the injection is completed, the upper mold base 1 is moved and raised along the guide rod 11, and then the waste material on the gate of the lower mold box 15 is cleaned and removed. At this time, the staff puts coolant into the liquid inlet 161 and flows it to the connecting pipe 163, and then closes the solenoid valve 162, and then cools the injection molded part to facilitate demoulding. At the same time, the coolant can be replaced for easy use.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

Claims

1. A gate-free waste injection mold structure, characterized in that: The invention comprises an upper die base (1) and a lower die base (2), wherein a top plate (3) and a base (9) are fixedly provided on the outer sides of the upper die base (1) and the lower die base (2), an upper die box (14) and a lower die box (15) are provided inside the upper die base (1) and the lower die base (2), and a guide frame (5) is provided on the front and rear sides, a first positioning pin (6) and a second positioning pin (7) are slidably provided inside the guide frame (5), the first positioning pin (6) and the second positioning pin (7) are fixedly connected to the upper die base (1) and the lower die base (2), respectively, and a cooling component (16) is provided inside the lower die box (15).

2. The gate-free waste injection mold structure according to claim 1, characterized in that: A positioning ring (4) is fixedly provided on the upper end surface of the top plate (3), and a nozzle (41) is provided inside the positioning ring (4). The nozzle (41) is connected to the upper mold box (14) below, and second bolts (82) are threadedly provided on both sides of the top plate (3).

3. The gate-free waste injection mold structure according to claim 1, characterized in that: Four guide rods (11) are provided on the upper end surface of the lower die base (2), and the four guide rods (11) pass through the interior of the upper die base (1). Positioning columns (10) are provided on both sides of the upper end of the lower die base (2), and the positioning columns (10) are clamped in a cavity provided in the interior of the upper die base (1).

4. The gate-free waste injection mold structure according to claim 1, characterized in that: First bolts (81) are respectively threadedly connected to the outer walls of the lower die base (2); the outer walls of the first bolt (81) and the second bolt (82) are sleeved with a clamping plate (8); and buffer frames (12) are provided on both sides of the interior of the lower die base (2).

5. The gate-free waste injection mold structure according to claim 1, characterized in that: Damping rods (13) are provided on both sides of the buffer frame (12) inside the lower die base (2), and a buffer spring is sleeved on the outer wall of the damping rod (13), and the bottom of the damping rod (13) is provided on the base (9).

6. The gate-free waste injection mold structure according to claim 1, characterized in that: The cooling assembly (16) comprises a liquid inlet (161), a solenoid valve (162) and a connecting pipe (163); the liquid inlet (161) is arranged on the outside of the lower mold base (2) and the liquid inlet (161) is fixedly connected to the connecting pipe (163); the connecting pipe (163) is arranged inside the lower mold box (15) and the extended end is connected to the liquid outlet (164); the outer walls of the liquid inlet (161) and the liquid outlet (164) are both provided with solenoid valves (162).

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