Novel second plate special for bottle preform

Abstract

The utility model discloses a novel second plate special for bottle preforms, which comprises a back plate, a plurality of first supports are arranged at one end of the back plate, and a plurality of second supports are arranged at the other end of the back plate. One end of the long connecting plate is connected with the first supports, and the other end of the long connecting plate is connected with the second supports; the first ejection assembly comprises a first ejection oil cylinder arranged on the long yoke plate; the second ejection assembly comprises a second ejection oil cylinder arranged on the back plate; wherein a plurality of mounting holes for mounting the second ejection oil cylinders and a plurality of oil conveying holes communicated with the mounting holes are formed in the back plate, and the oil conveying holes are used for supplying oil to the second ejection oil cylinders. According to the utility model, the oil conveying hole is formed in the back plate, so that the original scheme that an oil pipe is directly and externally connected to the second ejection oil cylinder is replaced, the space occupied by the oil pipe in the length direction can be reduced, and the volume of the injection molding machine is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a novel two-platen assembly specifically for preforms. Background Technology

[0002] In recent years, with the rapid development of the plastics processing industry, the market demand for preforms has continued to increase, while higher requirements have been placed on the quality and production efficiency of preforms. Traditional preform injection molding machines often suffer from uneven ejection force and insufficient ejection speed when ejecting preforms, making it difficult to meet the demands of today's high-speed and high-precision production. To improve the ejection effect, an auxiliary ejection mechanism needs to be added.

[0003] To improve the ejection effect of the preform, the existing solution is to set up two sets of ejection cylinders, namely the main ejection cylinder and the auxiliary ejection cylinder. The main ejection cylinder and the auxiliary ejection cylinder work together to enable the cylinders to provide sufficient ejection force and ejection speed at different stages, and the ejection force is more uniform.

[0004] As described in the invention patent with publication number "CN100577393C" and patent name "Main and Auxiliary Multi-Top Injection Mold Mechanism", it includes a moving template, an ejection cylinder, a support rod, an ejection plate, and an ejection rod. The ejection plate is connected to the ejection rod passing through the moving template. The moving template is characterized by having a rib plate parallel to the moving template body. The ejection plate is located between the rib plate and the moving template body. The support rod passes through the ejection plate and is fixedly connected at both ends to the rib plate and the moving template body, respectively. The ejection cylinder includes a main ejection cylinder and an auxiliary ejection cylinder. The main ejection cylinder is directly connected to the rib plate, and its piston rod is connected to the ejection plate. The auxiliary ejection cylinder is installed on the moving template body, and its piston rod is also connected to the ejection plate.

[0005] However, in the above scheme, the auxiliary ejection cylinder is set on the moving mold plate body, but the auxiliary cylinder needs to be connected to an external oil pipe to supply oil. These external oil pipes will occupy the space in the length direction of the injection molding machine, resulting in a large length of the injection molding machine. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to propose a new type of preform-specific two-plate, which is used to solve the problem that the length of the injection molding machine is too large due to the need for an external oil pipe for the auxiliary ejection cylinder in the prior art.

[0007] The technical solution adopted by this utility model to solve its technical problem is a novel two-plate system specifically for preforms, comprising:

[0008] A back plate, wherein one end of the back plate is provided with a plurality of first supports and the other end is provided with a plurality of second supports;

[0009] The long connecting plate has one end connected to multiple first brackets and the other end connected to multiple second brackets;

[0010] The first ejection assembly includes a first ejection cylinder disposed on the long connecting plate;

[0011] The second ejection assembly includes a second ejection cylinder disposed on the back plate;

[0012] The back plate has several mounting holes for mounting the second ejector cylinder and several oil supply holes communicating with the mounting holes, which are used to supply oil to the second ejector cylinder.

[0013] Furthermore, the back plate has a first surface facing the long connecting plate, a second surface facing away from the long connecting plate, and a plurality of side surfaces located between the first surface and the second surface, and the length direction of the mounting hole is parallel to or coincides with the thickness direction of the back plate;

[0014] The oil inlet extends to one or more of the sides.

[0015] Furthermore, the back plate has two first sides facing each other and two second sides facing each other;

[0016] The oil delivery hole includes a first oil passage and a second oil passage. The two ends of the first oil passage extend to the two first side surfaces to form an oil inlet or an oil outlet. One end of the second oil passage is connected to the first oil passage, and the other end extends to the second side surface to form an oil inlet or an oil outlet.

[0017] Furthermore, two first oil passages are provided on the back plate, and each first oil passage is connected to two second oil passages.

[0018] Furthermore, the back plate has two oil inlets arranged along its thickness direction, one of which is used for oil inlet and the other for oil outlet.

[0019] Furthermore, the back plate is provided with eight mounting holes, each of which communicates with one of the first oil passages or the second oil passage.

[0020] Furthermore, the two first oil passages are symmetrical about the center of the back plate, the two second oil passages connected to the same first oil passage are symmetrical about the center of the first oil passage, and the two second oil passages connected to different first oil passages are symmetrical about the center of the back plate.

[0021] Furthermore, each of the mounting holes has another mounting hole that is symmetrical about the back plate.

[0022] Furthermore, the first ejector cylinder is positioned at the center of the back plate.

[0023] Furthermore, guide rail sliders are provided on both sides of the back plate.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. By opening an oil supply hole inside the back plate, the original solution of directly connecting the oil pipe to the second ejector cylinder can be replaced, which can reduce the space occupied by the oil pipe in the length direction and reduce the size of the injection molding machine.

[0026] 2. By evenly distributing multiple second ejection cylinders on the back plate, the multiple second ejection cylinders act evenly on various positions of the preform, ensuring that the preform can be ejected in a more stable posture.

[0027] 3. Start guide rail sliders on both sides of the back panel so that it can slide on the corresponding rails, thereby reducing the overall height of the back panel. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the novel preform-specific two-plate from one perspective in the embodiment;

[0029] Figure 2 This is a schematic diagram of the structure of the novel preform-specific two-plate from another perspective in the embodiment;

[0030] Figure 3 This is a side view of the novel preform-specific two-plate in the embodiment;

[0031] Figure 4 for Figure 3 Sectional view at point AA;

[0032] In the picture:

[0033] 100. Back plate; 101. First surface; 102. Second surface; 103. First side surface; 104. Second side surface; 110. Mounting hole; 120. Guide rail slider; 121. Reinforcing rib; 130. First oil passage; 140. Second oil passage;

[0034] 200. First support; 210. Second support;

[0035] 300. Long connecting plate. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] Please refer to Figures 1-4This utility model discloses a novel two-plate system specifically for preforms, comprising:

[0038] A back plate 100, one end of which is provided with a plurality of first supports 200 and the other end of which is provided with a plurality of second supports 210;

[0039] The long connecting plate 300 has one end connected to a plurality of the first brackets 200 and the other end connected to a plurality of the second brackets 210;

[0040] The first ejection assembly includes a first ejection cylinder disposed on the long connecting plate 300;

[0041] The second ejection assembly includes a second ejection cylinder disposed on the back plate 100;

[0042] The back plate 100 has a plurality of mounting holes 110 for mounting the second ejector cylinder, and a plurality of oil supply holes communicating with the mounting holes 110, the oil supply holes being used to supply oil to the second ejector cylinder.

[0043] In this embodiment, a first ejection cylinder is provided on the long connecting plate 300, and a second ejection cylinder is provided on the back plate 100. The first ejection cylinder and the second ejection cylinder work together to provide sufficient ejection force and ejection speed at different stages, and the ejection force is more uniform.

[0044] Specifically, the back plate 100 has a mounting hole 110. The second ejector cylinder is installed in the mounting hole 110, which can hide the second ejector cylinder inside the back plate 100, thereby reducing the space occupied by the second ejector cylinder in the length direction.

[0045] More importantly, an oil delivery hole is provided on the back plate 100, and the oil delivery hole communicates with the mounting hole 110, allowing oil to be delivered to the second ejector cylinder inside the mounting hole 110. Therefore, by providing an oil delivery hole inside the back plate 100, replacing the original solution of directly connecting an external oil pipe to the second ejector cylinder, the space occupied by the oil pipe in the length direction can be reduced, thus reducing the size of the injection molding machine.

[0046] Furthermore, the back plate 100 has a first surface 101 facing the long connecting plate 300, a second surface 102 facing away from the long connecting plate 300, and a plurality of side surfaces located between the first surface and the second surface, and the length direction of the mounting hole 110 is parallel to or coincides with the thickness direction of the back plate 100.

[0047] The oil inlet extends to one or more of the sides.

[0048] Specifically, the oil supply hole extends to the side, so that the oil inlet and outlet of the oil supply hole are located on the side of the back plate 100. The oil pipe connected to the oil inlet or outlet can also be placed on the side of the back plate 100, which avoids the oil pipe occupying too much space in the thickness direction of the back plate 100 by setting it on the first surface 101 or the second surface 102, and reduces the length of the injection molding machine.

[0049] Furthermore, the back plate 100 has two first side surfaces 103 that are opposite to each other and two second side surfaces 104 that are opposite to each other;

[0050] The oil supply port includes a first oil passage 130 and a second oil passage 140. The two ends of the first oil passage 130 extend to the two first side surfaces 103 to form an oil inlet or an oil outlet. One end of the second oil passage 140 is connected to the first oil passage 130, and the other end extends to the second side surface 104 to form an oil inlet or an oil outlet.

[0051] Specifically, the oil supply port includes a first oil passage 130 and a second oil passage 140. The two ends of the first oil passage 130 extend to two first side surfaces 103, forming an oil inlet or outlet. One end of the second oil passage 140 connects to the first oil passage 130, and the other end extends to a second side surface 104, forming an oil inlet or outlet. In other words, the first oil passage 130 and the second oil passage 140 are connected, and one or more second ejection cylinders are respectively provided on the first oil passage 130 and the second oil passage 140, allowing multiple second ejection cylinders to be simultaneously driven by oil to provide a more uniform ejection force.

[0052] Furthermore, two first oil passages 130 are provided on the back plate 100, and two second oil passages 140 are respectively connected to each first oil passage 130.

[0053] The back plate 100 has two first oil passages 130, which are parallel to each other. Each first oil passage 130 has two second oil passages 140, for a total of four second oil passages 140.

[0054] Furthermore, the back plate 100 has two oil inlets arranged along its thickness direction, one of which is used for oil inlet and the other for oil outlet. That is, one oil inlet extends to the oil port on the first side and the second side as the oil inlet, and the other oil inlet extends to the oil port on the first side and the second side as the oil outlet.

[0055] Specifically, the back plate 100 has two oil inlets, one for oil inlet and the other for oil outlet, to realize oil circulation and drive the second ejector cylinder to eject the material.

[0056] Furthermore, the back plate 100 is provided with eight mounting holes 110, each of which communicates with a first oil passage 130 or a second oil passage 140.

[0057] Specifically, each first oil passage 130 has two mounting holes 110, and each second oil passage 140 has one mounting hole 110, for a total of eight mounting holes 110. Each mounting hole 110 houses a second ejector cylinder, meaning that the back plate 100 integrates a total of eight second ejector cylinders.

[0058] Furthermore, the two first oil passages 130 are symmetrical about the center of the back plate 100, the two second oil passages 140 connected to the same first oil passage 130 are symmetrical about the center of the first oil passage 130, and the two second oil passages 140 connected to different first oil passages 130 are symmetrical about the center of the back plate 100.

[0059] The two first oil passages 130 are symmetrical about the center of the back plate 100, which makes the second ejection cylinders on the two first oil passages 130 also symmetrical about the center of the back plate 100, and the ejection force on the left and right sides of the preform is more uniform.

[0060] The two second oil passages 140 on the same first oil passage 130 are symmetrical about the center of the first oil passage 130, and the second ejection cylinders on the two second oil passages 140 on the same side are symmetrical about the center of the first oil passage 130, so that the ejection force of the upper and lower regions on the same side of the preform is more uniform.

[0061] The two second oil passages 140 on the two first oil passages 130 are symmetrical about the center of the back plate 100, and the second ejection cylinders on the second oil passages 140 on both sides are symmetrical about the center of the back plate 100, so that the ejection force on the left and right sides of the preform is more uniform.

[0062] In summary, by evenly distributing multiple second ejection cylinders on the back plate 100, the multiple second ejection cylinders act evenly on various positions of the preform, ensuring that the preform can be ejected in a more stable posture.

[0063] Furthermore, each of the mounting holes 110 has another mounting hole 110 that is symmetrical about the back plate 100.

[0064] Furthermore, the first ejector cylinder is located at the center of the back plate 100.

[0065] Furthermore, each of the second ejector cylinders has another second ejector cylinder that is symmetrical about the first ejector cylinder.

[0066] Specifically, with the center of the back plate 100 as the center point, the eight mounting holes 110 are divided into four groups, each group including two mounting holes 110 symmetrical about the center point; the eight second ejection cylinders are also divided into four groups, each group including two second ejection cylinders symmetrical about the center point. Simultaneously, the first ejection cylinder is positioned at the center of the back plate 100, such that the two second ejection cylinders in each group are symmetrical about the first ejection cylinder. Thus, the first ejection cylinder, acting as the main ejection cylinder, acts at the center position, while the second ejection cylinders, acting as auxiliary ejection cylinders, are evenly distributed around the perimeter in a symmetrical arrangement about the first ejection cylinder, resulting in a more uniform ejection force at all positions of the preform.

[0067] Furthermore, guide rail sliders 120 are provided on both sides of the back plate 100.

[0068] It should be noted that the original back panel 100 has slide rails or other components for sliding at the upper or lower end, which makes the entire back panel 100 occupy too much space in the height direction.

[0069] Based on this, in this embodiment, guide rail sliders 120 are installed on both sides of the back plate 100, allowing them to slide on the corresponding rails, thereby reducing the overall height of the back plate 100. Furthermore, compared to setting rails at the top and bottom, setting guide rail sliders 120 on both the left and right sides allows for more even force distribution on the two guide rail sliders 120, resulting in a more stable sliding posture of the back plate 100.

[0070] Furthermore, a reinforcing rib 121 is provided between the back plate 100 and the guide rail slider 120 to enhance the strength of the guide rail.

[0071] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0072] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0074] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A novel two-plate dedicated preform, characterized by, include: A back plate, wherein one end of the back plate is provided with a plurality of first supports and the other end is provided with a plurality of second supports; The long connecting plate has one end connected to multiple first brackets and the other end connected to multiple second brackets; The first ejection assembly includes a first ejection cylinder disposed on the long connecting plate; The second ejection assembly includes a second ejection cylinder disposed on the back plate; The back plate has several mounting holes for mounting the second ejector cylinder and several oil supply holes communicating with the mounting holes, which are used to supply oil to the second ejector cylinder.

2. A novel two-plate special preform according to claim 1, characterized in that, The back plate has a first surface facing the long connecting plate, a second surface facing away from the long connecting plate, and a plurality of side surfaces located between the first surface and the second surface, and the length direction of the mounting hole is parallel to or coincides with the thickness direction of the back plate; The oil inlet extends to one or more of the sides.

3. A novel two-plate special preform according to claim 2, characterized in that, The back plate has two first sides facing each other and two second sides facing each other; The oil supply port includes a first oil channel and a second oil channel. The two ends of the first oil channel extend to the two first side surfaces to form an oil inlet or an oil outlet. One end of the second oil channel is connected to the first oil channel, and the other end extends to the second side surface to form an oil inlet or an oil outlet.

4. A novel two-plate special preform according to claim 3, characterized in that, Two first oil passages are provided on the back plate, and two second oil passages are connected to each first oil passage.

5. A novel two-plate special preform according to claim 3, characterized in that, The back plate has two oil inlets arranged along its thickness direction, one of which is used for oil inlet and the other for oil outlet.

6. A novel two-plate special preform according to claim 4, characterized in that, The back plate has eight mounting holes, each of which communicates with one of the first oil passages or the second oil passage.

7. A novel two-plate special preform according to claim 4, characterized in that, The two first oil passages are symmetrical about the center of the back plate, the two second oil passages connected to the same first oil passage are symmetrical about the center of the first oil passage, and the two second oil passages connected to different first oil passages are symmetrical about the center of the back plate.

8. A novel two-plate special preform according to claim 7, characterized in that, Each of the mounting holes has another mounting hole that is symmetrical about the back plate.

9. A novel two-plate special preform according to claim 8, characterized in that, The first ejector cylinder is located at the center of the back plate.

10. A novel two-plate special preform according to claim 1, characterized in that, Guide rail sliders are also provided on both sides of the back plate.

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