Slide core withdrawing structure

Abstract

The utility model discloses a slide way core withdrawing structure which comprises a first module, the first module comprises a bottom plate, a top plate fixed above the bottom plate, a top pressing assembly installed between the bottom plate and the top plate and capable of moving up and down, and a first template installed at the upper end of the top plate and used for workpiece forming. Core withdrawing assemblies are correspondingly installed on the portions, on the two sides of the first mold plate, of the top plate, and each core withdrawing assembly comprises a movable base, a sliding groove formed in the movable base, a sliding base movably installed in the sliding groove, a plurality of core shafts installed on one side of the sliding base side by side, two sliding blocks installed on the other side of the sliding base side by side and two guide bases installed on the side edge of the top plate side by side. One side of each guide seat is provided with an arc-shaped slide way, the arc-shaped slide way extends upwards towards one end far away from the movable seat, and the side edge of each guide seat is provided with a limiting plate with a limiting through hole; according to the utility model, the mandrel can be driven by the servo motor to withdraw from and separate from the workpiece, so that the workpiece is separated from the die, and the device is rapid and accurate and has higher working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a slideway core-retracting structure of an injection mold. Background Art

[0002] Injection molds are tools for producing plastic products, and they also give plastic products a complete structure and precise dimensions. Injection molds can be used to mass produce workpieces, and are mainly used in the industrial field. After the injection mold is closed, the heated and melted material is injected into the mold cavity by high pressure, and the molded workpiece is obtained after cooling and solidification. After the injection mold is opened, the molded workpiece is taken out.

[0003] In order to improve production efficiency, injection molds can form several or dozens of workpieces at a time. The existing injection mold structure is not very reasonable. It is driven by a cylinder to achieve mold closing or mold opening. The cylinder can provide a large push and pull force, but its cost is high, it is difficult to achieve precise position control, the positioning is not fast and accurate enough, and the cylinder is prone to oil pollution when in use, causing great pollution to equipment and workshops. In addition, the existing mold structure also has the disadvantage of not being able to quickly demold the injection molded workpiece. Utility Model Content

[0004] In order to overcome at least one of the technical problems existing in the prior art, the utility model provides a slide core withdrawal structure, which can be driven by a servo motor to withdraw and separate the core shaft from the workpiece, thereby separating the workpiece from the mold. It is fast and accurate, and has higher work efficiency.

[0005] A slideway core-retracting structure comprises a first die set, the first die set comprises a bottom plate, a top plate fixed above the bottom plate, a top pressure assembly installed between the bottom plate and the top plate and capable of moving up and down, a first die set installed at the upper end of the top plate for forming a workpiece, a core-retracting assembly is correspondingly installed on the top plates on both sides of the first die set, each core-retracting assembly comprises a moving seat, a slide groove provided on the moving seat, a slide seat movably installed in the slide groove, a plurality of core shafts installed side by side on one side of the slide seat, two slide blocks installed side by side on the other side of the slide seat, and a plurality of core shafts installed side by side on the slide seat. There are two guide seats on the side of the top plate, and an arc-shaped slide is opened on one side of each guide seat, and the arc-shaped slide extends upward toward the end away from the moving seat. A limit plate with a limit through hole is set on the side of each guide seat, and the first end of the slider extends from the limit through hole, and the sliding pin fixed to the first end of the slider extends into the arc-shaped slide. A plurality of vertical shafts are installed between the moving seat and the top pressure assembly, and each vertical shaft passes axially through the top plate, and each core shaft can extend into the workpiece forming cavity of the first template after passing through the side wall of the moving seat in the horizontal direction.

[0006] In some embodiments, the ejection pressure assembly includes an ejector plate and a support plate installed between the bottom plate and the top plate, the ejector plate and the support plate are stacked and fixed together, the first end of each vertical shaft is fixedly connected to the ejector plate, the second end of each vertical shaft is fixedly connected to the bottom of the movable seat after passing through the top plate, a plurality of ejectors are vertically installed on the ejector plate, each ejector passes through the top plate and enters into the first template, a plurality of guide shafts passing through the ejector plate and the support plate are vertically installed between the bottom plate and the top plate, and a spring is sleeved on the guide shaft between the support plate and the top plate.

[0007] In some embodiments, the movable seat is a U-shaped seat, and two slide grooves are symmetrically opened on the inner walls on both sides of the movable seat. The two sides of the slide seat are correspondingly inserted into the two slide grooves and can slide linearly in the horizontal direction. A baffle is installed on one side of the slide seat, and each core shaft can extend into the workpiece forming cavity of the first template after passing through the baffle in the horizontal direction.

[0008] In some embodiments, a second module is also included, which includes an upper plate and a second template stacked and fixed together in sequence, a cooling water channel is installed in the second template, a water inlet pipe and a water outlet pipe connected to the cooling water channel are installed on the side wall of the second template, and a material injection port is opened at the top of the second template.

[0009] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0012] Figure 2 It is a schematic diagram of the split structure of this application;

[0013] Figure 3 This is a schematic diagram of the structure of the second module when viewed from above;

[0014] Figure 4 It is a schematic diagram of the combined structure of the first module, the workpiece and the core-retracting assembly;

[0015] Figure 5 It is a schematic diagram of the structure of the top plate and the core withdrawal assembly;

[0016] Figure 6 yes Figure 5 Schematic diagram of the split structure;

[0017] Figure 7 It is a schematic diagram of the connection structure of the moving seat, baffle, mandrel, guide seat, slide seat and slider;

[0018] Figure 8 yes Figure 7 Schematic diagram of the split structure.

[0019] Reference numerals:

[0020] First module 1, bottom plate 100, top plate 101, top pressing assembly 102, ejector plate 102a, support plate 102b, ejector 102c, guide shaft 102d, spring 102e

[0021] The first template 103, the material flow channel 103a, and the workpiece forming cavity 103b;

[0022] Workpiece 2, core-retracting component 3;

[0023] Moving seat 300, slide groove 301, slide seat 302, mandrel 303, slider 304, guide seat 305, arc slideway 306, limit plate 307, slide pin 308, vertical shaft 309, baffle 310;

[0024] The second module 4 , the upper plate 400 , the second template 401 , the water inlet pipe 403 , the water outlet pipe 404 , and the injection port 402 . DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are based on the orientations or positional relationships shown in the accompanying 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 invention can be understood according to specific circumstances.

[0029] Reference Figure 1-Figure 8 A slideway core-retracting structure includes a first module 1, the first module 1 includes a bottom plate 100, a top plate 101 fixed above the bottom plate 100, a top pressure assembly 102 installed between the bottom plate 100 and the top plate 101 and capable of moving up and down, and a first template 103 installed at the upper end of the top plate 101 for forming a workpiece 2. A material flow channel 103a and a plurality of workpiece forming cavities 103b connected to the material flow channel 103a are provided on the first template 103. A core-retracting assembly 3 is correspondingly installed on the top plates 101 on both sides of the first template 103. Each core-retracting assembly 3 includes a moving seat 300, a slide groove 301 provided on the moving seat 300, a slide seat 302 movably installed in the slide groove 301, a plurality of core shafts 303 installed side by side on one side of the slide seat 302, and a plurality of core shafts 303 installed side by side on the slide seat 302. 02, two sliders 304 on the other side, and two guide seats 305 symmetrically installed side by side on the side of the top plate 101, an arcuate slide 306 is opened on one side of each guide seat 305, and the arcuate slide 306 extends upward toward the end away from the moving seat 300, and a limit plate 307 with a limit through hole 306 is arranged on the side of each guide seat 305, the first end of the slider 304 extends out from the limit through hole 306, and the sliding pin 308 fixed on the first end of the slider 304 extends into the arcuate slide 306, and a plurality of vertical shafts 309 are installed between the moving seat 300 and the top pressure assembly 102, and each vertical shaft 309 passes axially through the top plate 101, and each core shaft 303 passes through the side wall of the moving seat 300 in the horizontal direction and can extend into the workpiece forming cavity 103b of the first template 103.

[0030] When the injected material enters each workpiece molding cavity 103b through the material flow channel 103a and is formed after cooling, the second die set 4 is separated from the first die set 1 under the pull of the servo motor, and then the top pressing assembly 102 is driven by the servo motor to synchronously move the two moving seats 300 and the workpiece 2 in a straight line away from the top plate 101 through each vertical shaft 309. The servo motor has accurate positioning, faster speed, faster mold closing or opening speed, and no oil stains. When the two moving seats 300 move linearly, the sliding pin 308 fixed vertically to the slider 304 moves along the arc slide 306. Because the arc slide 306 extends upward toward the end away from the moving seat 300, when the sliding pin 308 moves, it will pull the slider 304 to move linearly in the direction away from the first template 103. When the slider 304 moves horizontally, it drives the slide seat 302 to move horizontally synchronously, and each mandrel 303 will withdraw and separate from each corresponding workpiece 2. At this time, the workpiece 2 is automatically demolded and falls out of the mold; in this application, eight workpiece forming cavities 103b can be symmetrically arranged on both sides of the first template 103 and the second template, and eight mandrels 303 are correspondingly installed on each of the two slide seats 302, so that sixteen workpieces 2 can be formed at one time. This application can be driven by a servo motor to separate the mandrels 303 from the workpiece 2 after withdrawing from the workpiece 2, so that the workpiece 2 is separated from the mold, which is fast and accurate, and has higher work efficiency.

[0031] The ejector assembly 102 includes an ejector plate 102a and a support plate 102b installed between the bottom plate 100 and the top plate 101. The ejector plate 102a and the support plate 102b are stacked and fixed together. The first end of each vertical shaft 309 is fixedly connected to the ejector plate 102a. The second end of each vertical shaft 309 is fixedly connected to the bottom of the movable seat 300 after passing through the top plate 101. A plurality of ejectors 102c are vertically installed on the ejector plate 102a. Each ejector 102c passes through the top plate 101 and enters the bottom of the material flow channel 103a in the first template 103. , which can extend into the material flow channel 103a under the action of external force. After the workpiece 2 is cooled and formed, each ejector 102c ejects the connected workpieces 2 away from the first template 103. A plurality of guide shafts 102d passing through the ejector plate 102a and the supporting plate 102b are vertically installed between the bottom plate 100 and the top plate 101. The guide shafts 102d between the supporting plate 102b and the top plate 101 are used for guiding and preventing displacement. A spring 102e is sleeved on the guide shaft 102d between the supporting plate 102b and the top plate 101 to facilitate the automatic reset of the ejector plate 102a and the supporting plate 102b when the mold is closed.

[0032] In some embodiments, the movable seat 300 is a U-shaped seat, and two U-shaped slide grooves 301 are symmetrically opened on the inner walls on both sides of the movable seat 300. The two sides of the slide seat 302 are correspondingly inserted into the two slide grooves 301, and can slide linearly in the horizontal direction, which can prevent the slide seat 302 from shifting. A baffle 310 with a core shaft through hole is installed on one side of the slide seat 302. After each core shaft 303 passes through the core shaft through hole in the baffle 310 in the horizontal direction, it can extend into the workpiece forming cavity of the first template 103. The core shaft 303 is used to fix or support the workpiece 2, and form a workpiece hole in the middle part of the workpiece 2 along the axial direction.

[0033] In some embodiments, a second module 4 is also included. The second module 4 and the first module 1 constitute an injection mold. The second module 4 includes an upper plate 400 and a second template 401 that are stacked and fixed together in sequence, and a cooling water channel is installed in the second template 401. The structure of the first template 103 and the second template 401 is basically the same. The side walls of the first template 103 and the second template 401 are installed with an inlet pipe 403 and an outlet pipe 404 that are connected to the cooling water channel located inside. After the coolant is connected, it is used to circulate and cool the workpiece. An injection port 402 for material injection is opened on the top of the second template 401; material flow channels 103a and multiple workpiece molding cavities 103b are opened on the first template 103 and the second template 401 respectively. After the injection mold is closed, a complete workpiece molding cavity 103b is formed for injection molding a complete workpiece 2.

[0034] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although the embodiments of the utility model have been shown and described, ordinary technicians in this field can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of the utility model. The scope of the utility model is defined by the claims and their equivalents.

Claims

1. A slideway core-retracting structure, comprising a first die set, the first die set comprising a bottom plate, a top plate fixed above the bottom plate, a top pressing assembly installed between the bottom plate and the top plate and capable of moving up and down, and a first die set installed at the upper end of the top plate for forming a workpiece, wherein: A core withdrawal assembly is correspondingly installed on the top plates on both sides of the first template, and each core withdrawal assembly includes a moving seat, a slide groove opened on the moving seat, a slide seat movably installed in the slide groove, multiple core shafts installed side by side on one side of the slide seat, two sliders installed side by side on the other side of the slide seat, and two guide seats installed side by side on the side of the top plate. An arc slide is opened on one side of each guide seat, and the arc slide extends upward toward the end away from the moving seat. A limiting plate with a limiting through hole is arranged on the side of each guide seat, and the first end of the slider extends out of the limiting through hole, and the sliding pin fixed to the first end of the slider extends into the arc slide. Multiple vertical shafts are installed between the moving seat and the top pressure assembly, and each vertical shaft passes axially through the top plate. Each core shaft can extend into the workpiece forming cavity of the first template after passing through the side wall of the moving seat in the horizontal direction.

2. The slideway core-retracting structure according to claim 1, characterized in that: The jacking assembly includes an ejector plate and a supporting plate installed between the bottom plate and the top plate, the ejector plate and the supporting plate are stacked and fixed together, the first end of each vertical shaft is fixedly connected to the ejector plate, the second end of each vertical shaft is fixedly connected to the bottom of the movable seat after passing through the top plate, a plurality of ejectors are vertically installed on the ejector plate, each ejector passes through the top plate and enters the first template, a plurality of guide shafts passing through the ejector plate and the supporting plate are vertically installed between the bottom plate and the top plate, and a spring is sleeved on the guide shaft between the supporting plate and the top plate.

3. The slideway core-retracting structure according to claim 1 or 2, characterized in that: The movable seat is a U-shaped seat, and two slide grooves are symmetrically opened on the inner walls on both sides of the movable seat. The two sides of the slide seat are correspondingly inserted into the two slide grooves and can slide linearly in the horizontal direction. A baffle is installed on one side of the slide seat. After each core shaft passes through the baffle in the horizontal direction, it can extend into the workpiece forming cavity of the first template.

4. The slideway core-retracting structure according to claim 3, characterized in that: It also includes a second module, which includes an upper plate and a second template stacked and fixed together in sequence, a cooling water channel installed in the second template, a water inlet pipe and a water outlet pipe connected to the cooling water channel installed on the side wall of the second template, and a material injection port is opened on the top of the second template.

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