Elliptical wine glass processing device and processing method

Abstract

The invention discloses a processing device and a processing method of an oval wine glass, and belongs to the technical field of wine glass processing. The device comprises a sliding mechanism and two models, semi-oval cavities are symmetrically formed in the opposite faces of the two models, and the final long axis L2 of each oval wine glass cavity and the final long axis L1 of a wine glass meet the following relation: L2gt, l1; and the final long axis L2 of the cavity is configured as follows: when the two models are closed to perform extrusion forming on a wine glass blank in a high-temperature state, a gap for avoiding contact is formed between the wall in the long axis direction of the wine glass and the inner wall of the cavity. The long axis of the cavity is designed to be larger than the long axis of the finished wine glass, and meanwhile, the long axis of the cavity is kept equal in length in the short axis direction, so that a gap is reserved between the wall of the wine glass in the long axis direction and the inner wall of the cavity in the die assembly extrusion process, contact is avoided, a die assembly line is fundamentally avoided, and the production efficiency is improved. And the elliptical wine glass with a smooth surface and no flaws can be obtained without depending on high-precision processing or post-processing.

Description

Technical Field

[0001] This invention belongs to the field of wine glass processing technology, specifically relating to a processing device for an oval wine glass. Background Technology

[0002] Due to its non-axisymmetric geometry, the oval wine glass cannot be easily removed from the cavity by a simple straight demolding process when using traditional two-plate or three-plate molds. Instead, mechanisms such as sliders or angled ejectors must be used to form the irregular shape. The joints between these moving parts and the mold body, as well as the parting surface of the mold itself, are the source of the parting line. The parting line on the wine glass affects its appearance, and how to eliminate the parting line is a common problem in the molding process of oval wine glasses.

[0003] The main methods for eliminating parting lines currently include:

[0004] High-precision machining: The mating surfaces of the slider, cavity, and core must be processed by precision grinding, slow wire cutting, or mirror EDM to ensure that the gaps at the joints are extremely small, usually at the level of a few micrometers.

[0005] Cavity pressure: Using high hot extrusion pressure, the product is squeezed into a very small gap, thereby creating an extremely fine, almost invisible parting line;

[0006] Post-processing: Even if there are fine lines, they are very regular and small, and can be easily removed by simple polishing or vibratory grinding.

[0007] However, existing high-precision machining requires extremely high precision in machining equipment, cutting tool accuracy, machine tool stability, machining process, and operator skill level, which increases costs accordingly. Using cavity pressure and post-processing, on the other hand, places high demands on operators, is greatly affected by human factors, has low work efficiency, and can only weaken the parting line, not completely remove it. Summary of the Invention

[0008] The purpose of this invention is to solve the above-mentioned technical problems and provide a processing device for oval wine glasses.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A processing device for an elliptical wine glass includes a sliding mechanism and two molds. The two molds are arranged opposite each other on the front and rear sides of the sliding mechanism. Semi-elliptical cavities are symmetrically formed on the opposite surfaces of the two molds. When the two semi-cavities are joined together, a complete elliptical wine glass cavity is formed. The final major axis L2 of the elliptical wine glass cavity satisfies the following relationship with the final major axis L1 of the wine glass: L2>L1. The final major axis L2 of the cavity is configured such that when the two molds are joined to extrude and form the wine glass blank at a high temperature, a gap is formed between the wall of the wine glass in the direction of the major axis and the inner wall of the cavity to avoid contact.

[0011] Furthermore, the difference between the final major axis L2 of the cavity and the final major axis L1 of the wine glass is the redundancy ΔL, and the value of the redundancy ΔL is (0.8-2.0) of the target forming major axis L2' of the cavity.

[0012] Furthermore, the target forming long axis L2´ of the cavity is calculated and determined based on the final long axis L1 of the wine glass and the material shrinkage rate α: that is, L2´=L1 / (1-α).

[0013] Final minor axis of cavity = target minor axis of cavity L3´ = final minor axis of wine glass L3 / (1-α).

[0014] Furthermore, the sliding mechanism includes a base, two guide rails and four sliders. The two guide rails are respectively fixed parallel to each other on the left and right sides of the top surface of the base. The four sliders are arranged in two groups and symmetrically sliding and cooperating on the front and rear sides of the two guide rails. The two models are respectively fixed on the top surface of the sliders on the same front and rear sides.

[0015] Furthermore, the sliding mechanism also includes two handles, which are U-shaped structures with their ends fixed to the top surfaces of the two sliders on the same side. The handles are inclined upwards and located on the outer back sides of the two models.

[0016] Furthermore, a reinforcing rib is provided between the handle and the back of the model.

[0017] A method for processing an oval-shaped wine glass includes the following steps:

[0018] S1: Provide a circular glass blank at high temperature;

[0019] S2: Place the high-temperature circular cup blank between two separate molds;

[0020] S3: Drive the two models to move towards each other, and use the cavities on them to extrude and form a high-temperature circular cup blank;

[0021] Wherein, the final long axis L2 of the cavity is greater than the final long axis L1 of the wine glass, so that during the mold closing and extrusion process, a gap is formed between the wall of the wine glass in the long axis direction and the inner wall of the cavity to avoid contact, thereby preventing the generation of the mold closing line.

[0022] Furthermore, the final major axis L2 of the cavity is determined by the following formula: L2 = L1 / (1-α) + ΔL;

[0023] Where L1 is the final major axis of the wine glass, α is the material shrinkage rate, and ΔL is the redundancy.

[0024] Furthermore, the redundancy ΔL ranges from (0.8-2.0)% of the major axis L2´ of the cavity target forming, where L2´=L1 / (1-α).

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention designs the long axis of the cavity to be larger than the long axis of the finished wine glass, while maintaining the same length in the short axis direction. This ensures that during the mold extrusion process, there is a gap between the wall of the wine glass along the long axis and the inner wall of the cavity, avoiding contact. This fundamentally avoids the generation of parting lines and allows for the production of smooth, flawless oval wine glasses without relying on high-precision machining or post-processing.

[0027] 2. The simple sliding mechanism and dual-mold closing method of this invention directly form the mold through mechanical extrusion, without the need for complex moving parts such as sliders and angled ejectors, or ultra-high precision machining equipment (such as wire EDM, mirror EDM, etc.), which significantly reduces the dependence on machining equipment, tool precision and operator skill level, and is suitable for general manufacturing environments;

[0028] 3. Since the parting line is completely eliminated in this invention, the subsequent processing steps such as high-pressure injection molding, polishing, and vibratory grinding required in traditional processes to weaken the parting line are eliminated, simplifying the production process, shortening the processing cycle, and improving production efficiency, making it especially suitable for mass production;

[0029] 4. The device of the present invention consists only of basic mechanical structures such as base, guide rail, slider, model and handle. It has a compact structure, is easy to manufacture and assemble, reduces the complexity and manufacturing cost of the mold itself, and strengthens the rib design to further improve the structural stability and service life. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the model of the present invention when separated;

[0031] Figure 2 This is a schematic diagram of the structure of the model of the present invention when it is closed;

[0032] Figure 3This is a schematic diagram of the wine glass forming process during mold closing according to the present invention;

[0033] In the diagram: 1-base, 2-guide rail, 3-slider, 4-model, 5-cavity, 6-handle, 7-reinforcing rib; 8-wine glass;

[0034] L1 is the final major axis of the wine glass; L2 is the final major axis of the cavity; L3 is the final minor axis of the wine glass; ΔL is the redundancy; L2´ is the target major axis of the cavity; L3´ is the target minor axis of the cavity; α is the material shrinkage rate. Detailed Implementation

[0035] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0036] Example 1: Processing and shaping of a medium-sized oval wine glass

[0037] like Figure 1-3 As shown, the object being processed is:

[0038] Wine glass material: Sodium-calcium silicate glass;

[0039] Final dimensions of the wine glass (after cooling): major axis L1 = 65.0 mm, minor axis L3 = 40.0 mm, height H = 85.0 mm;

[0040] Shrinkage rate of glass material: approximately 7%;

[0041] Cavity dimensions:

[0042] Calculate the target forming size of the cavity based on the material shrinkage rate:

[0043] The target forming major axis of the cavity is L2´=L1 / (1-7%)=65.0 / 0.93≈69.9mm;

[0044] The target forming short axis of the cavity is L3´=L3 / (1-7%)=40.0 / 0.93≈43.0mm;

[0045] The final major axis L2 of the cavity is increased by a redundancy ΔL based on the target forming major axis L2´ of the cavity.

[0046] Therefore, the final major axis of the cavity is L2 = L2´ + ΔL = 69.9 + 0.7 = 70.6 mm (ΔL ≈ 1% * L2´).

[0047] Final minor axis of cavity = target minor axis of cavity forming L3´ = 43.0mm.

[0048] Experimental results:

[0049] One hundred samples were processed using this device and compared with one hundred samples processed using a traditional two-plate mold (the long axis of the cavity is equal to the long axis of the wine glass, i.e., L2=69.9mm).

[0050] Table 1 Comparison of results between this embodiment and the conventional device

[0051] Evaluation indicators The device of the present invention Traditional two-plate mold device Parting line visibility 100% of the samples have no visible parting lines. 100% of the samples had a clear parting line. First-pass yield 98% 65% Ellipticity deviation ≤0.15mm ≤0.30mm Post-processing No polishing required 100% requires polishing Single-piece processing cycle ~15 seconds ~60 seconds (including polishing)

[0052] The experimental results show that by designing the final major axis L2 of the cavity to be larger than the final major axis L1 of the wine glass (after compensating for shrinkage and increasing the redundancy ΔL), a small gap can be ensured in the direction of the major axis during mold closing, completely avoiding contact friction between the mold and the glass wall, thus completely eliminating the mold parting line, significantly improving the yield rate, and saving the polishing process.

[0053] Example 2: Processing and shaping of small oval wine glasses

[0054] Processing object:

[0055] Wine glass material: ordinary glass;

[0056] Final dimensions of the wine glass (after cooling): L1 = 45.0 mm, L3 = 30.0 mm;

[0057] Material shrinkage rate: approximately 7%;

[0058] This experiment aimed to verify the effective range of the cavity long axis redundancy ΔL. Four different L2 values ​​were set up for comparison, with 20 samples processed in each group.

[0059] Group A: L2 = L1 / (1-7%) + 0.0mm = 48.4mm (ΔL = 0, control group)

[0060] Group B: L2 = 48.4 + 0.24 mm (ΔL ≈ 0.5% * L2)

[0061] Group C: L2 = 48.4 + 0.48 mm (ΔL ≈ 1.0% * L2)

[0062] Group D: L2 = 48.4 + 1.20 mm (ΔL ≈ 2.5% * L2´)

[0063] Table 2. Test Results of the Influence of Cavity Long Axis Redundancy ΔL on Product Quality

[0064] Group ΔL Parting line visibility Yield Remark A 0% All have obvious parting lines 60% traditional methods B 0.5% 20% of the samples had slight traces. 85% Improved but unstable results C 1.0% No visible parting line 100% Best results D 2.5% No visible parting line 100% The ellipticity is slightly off (+0.2mm).

[0065] As shown in Table 2, the final major axis L2 of the cavity is not necessarily better the larger it is. The optimal range of ΔL is approximately 0.8% to 2.0% of the target molding major axis L2' of the cavity. Within this range, it is possible to completely avoid the parting line and ensure the accuracy of elliptical molding. If ΔL is too small (<0.8%), contact cannot be completely avoided, and the effect is unstable. If ΔL is too large (>2.0%), although it does not affect the parting line, it may lead to a decrease in ellipticity due to insufficient extrusion.

[0066] The working process of this invention:

[0067] When using this invention, the pre-production process of the wine glass 8 is carried out according to the original process. First, a round wine glass 8 is blown out. When the round wine glass 8 is at a high temperature, it is placed between two molds 4. Then, the operator pushes the handle 6 inward by hand, and the two molds 4 slide towards each other. When the two semi-cavities 5 slide towards each other until the surface of the cavity 5 in the short axis direction contacts the high temperature wine glass 8, they continue to move towards each other, and the wine glass 8 is squeezed from both sides at the same time. The wine glass 8 is squeezed into an elliptical shape along with the surface of the cavity 5.

[0068] When the two molds 4 are closed, the resulting elliptical cavity 5 extrudes the wine glass 8 into the desired elliptical shape. Since the major axis L2 of the cavity 5 is larger than the major axis L1 of the elliptical wine glass 8, when the molds are closed, the wine glass wall in the major axis direction does not contact the inner wall of the cavity 5, leaving a gap. This prevents the wine glass wall from contacting the mold at the mold closing point and forming a mold parting line, ultimately forming a complete and flawless elliptical wine glass 8.

Claims

1. A processing device for an elliptical wine glass, comprising a sliding mechanism and two molds (4), the two molds (4) being arranged opposite each other on the front and rear sides of the sliding mechanism, and semi-elliptical cavities (5) being symmetrically formed on the opposite surfaces of the two molds (4), the two semi-cavities (5) being joined together to form a complete elliptical wine glass cavity, characterized in that: The final major axis L2 of the elliptical wine glass cavity satisfies the following relationship with the final major axis L1 of the wine glass: L2>L1; and the final major axis L2 of the cavity is configured such that when the two molds (4) are closed to extrude the wine glass blank under high temperature, a gap is formed between the wall of the wine glass (8) in the direction of the major axis and the inner wall of the cavity (5) to avoid contact.

2. The processing apparatus for an oval wine glass according to claim 1, characterized in that, The difference between the final major axis L2 of the cavity and the final major axis L1 of the wine glass is the redundancy ΔL, and the value of the redundancy ΔL is (0.8-2.0) of the target forming major axis L2' of the cavity.

3. The processing apparatus for an oval wine glass according to claim 2, characterized in that, The target major axis L2´ of the cavity is calculated and determined based on the final major axis L1 of the wine glass and the material shrinkage rate α: That is, L2´=L1 / (1-α); Final minor axis of cavity = target minor axis of cavity L3´ = final minor axis of wine glass L3 / (1-α).

4. The processing apparatus for an oval wine glass according to any one of claims 1 to 3, characterized in that, The sliding mechanism includes a base (1), two guide rails (2) and four sliders (3). The two guide rails (2) are respectively fixed in parallel on the left and right sides of the top surface of the base (1). The four sliders (3) are arranged in two groups and symmetrically sliding and cooperating on the front and back sides of the two guide rails (2). The two models (4) are respectively fixed on the top surface of the sliders (3) on the same front and back sides.

5. The processing apparatus for an oval wine glass according to claim 1, characterized in that, The sliding mechanism also includes two handles (6). The handles (6) are U-shaped structures with their ends fixed to the top surfaces of the two sliders (3) on the same side. The handles (6) are tilted upwards as a whole and are located on the outer back of the two models (4).

6. The processing apparatus for an oval wine glass according to claim 5, characterized in that, A reinforcing rib (7) is provided between the handle (6) and the back of the model (4).

7. A method for processing an elliptical wine glass using the processing apparatus as described in claim 1, characterized in that, Includes the following steps: S1: Provide a circular glass blank at high temperature; S2: Place the high-temperature circular cup blank between two separate molds (4); S3: Drive the two models (4) to move towards each other, and use the cavity (5) on them to extrude and form the high-temperature circular cup blank; Wherein, the final long axis L2 of the cavity (5) is greater than the final long axis L1 of the wine glass, so that during the mold closing and extrusion process, a gap is formed between the wall of the wine glass (8) in the long axis direction and the inner wall of the cavity (5) to avoid contact, thereby preventing the generation of the mold closing line.

8. The method for processing an oval wine glass according to claim 7, characterized in that, The final major axis L2 of the cavity is determined by the following formula: L2=L1 / (1-α)+ΔL; Where L1 is the final major axis of the wine glass, α is the material shrinkage rate, and ΔL is the redundancy.

9. The method for processing an oval wine glass according to claim 8, characterized in that, The redundancy ΔL ranges from (0.8-2.0)% of the major axis L2´ of the cavity target forming, where L2´=L1 / (1-α).

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