Large-stroke high-rigidity mold closing mechanism

Abstract

The utility model belongs to the technical field of plastic forming, and particularly relates to a large-stroke high-rigidity mold closing mechanism which comprises a stand column, a lower mold is installed on the outer side of the left end of the stand column, a top seat is fixedly installed at the right end of the stand column, a telescopic piece is fixedly installed on the right side of the top seat, and a connecting block is fixedly installed at the output end of the telescopic piece. And an upper mold is mounted between the lower mold and the top seat on the outer side of the stand column. According to the large-stroke high-rigidity mold closing mechanism, the telescopic piece is started to stretch out and draw back to push the connecting block to move leftwards, so that the connecting piece II and the connecting piece I are pushed to rotate around the top seat and the upper mold through the connecting piece III, the upper mold is pushed to slide leftwards along the stand column, and mold closing of the lower mold and the upper mold is achieved; the lower mold and the upper mold move at the same time to achieve mold closing, the stroke of the upper mold is shortened, the mold closing efficiency is improved, the upper mold and the lower mold are guided through the four stand columns, the mold closing precision of the upper mold and the lower mold is improved, and the production quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molding, in particular to a large-stroke and high-rigidity mold clamping mechanism. Background Art

[0002] The clamping mechanism is one of the most important parts of the injection molding machine. Its function is to ensure the reliable locking of the molding mold and realize the opening and closing movement of the mold and the ejection of the product. The system rigidity of the clamping mechanism affects the quality of the product, the clamping speed determines the number of machine cycles, the clamping force determines the total energy consumption of the machine, and the structure of the clamping mechanism also affects the cost of the whole machine. Therefore, the clamping mechanism directly affects the overall performance and cost of the injection molding machine.

[0003] In the prior art, the mold clamping mechanism adopts a mold locking device controlled by oil pressure, which has a complex structure, requires good sealing performance of the oil cylinder, is difficult to process, and has high cost.

[0004] For example, a clamping mechanism disclosed in Chinese patent CN104210078A adopts a lead screw to push the ejector rod forward or backward, with high displacement positioning accuracy, flexible movement, small resistance and low noise. The slot on the locking block and the teeth of the ejector rod are engaged with each other, which are tightly matched and have a large transmission torque. The locking mechanism is pushed by the oil bag to lock the dynamic template with high pressure. The structure is simple and the clamping force is large. The slot on the locking block and the teeth of the ejector rod are engaged with each other, which are tightly matched and have a large transmission torque. The locking mechanism is pushed by the oil bag to lock the dynamic template with high pressure. The structure is simple and the clamping force is large.

[0005] However, the device drives the movable platen to close the mold on the fixed platen through a lead screw, and the movable platen has a long stroke, which affects the mold closing efficiency.

[0006] For this reason, we urgently need to provide a large-stroke and high-rigidity clamping mechanism. Utility Model Content

[0007] The utility model aims to provide a large-stroke and high-rigidity mold closing mechanism to solve the problem in the background technology that the movable mold plate is driven by a lead screw to close the mold on the fixed mold plate, and the movable mold plate has a long stroke, which affects the mold closing efficiency.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-stroke and high-rigidity clamping mechanism, comprising a column, a lower mold is installed on the outer side of the left end of the column, a top seat is fixedly installed on the right end of the column, a telescopic member is fixedly installed on the right side of the top seat, a connecting block is fixedly installed on the output end of the telescopic member, an upper mold is installed on the outer side of the column between the lower mold and the top seat, a connecting member 1 is hinged at the upper and lower ends of the right side of the upper mold, a connecting member 2 is hinged at the upper and lower ends of the left side of the top seat, and a connecting member 3 is hinged at the upper and lower ends of the connecting block.

[0009] Preferably, the number of the pillars is four, and the pillars penetrate all around the interior of the lower mold, so that the lower mold slides left and right along the surface of the pillars.

[0010] Preferably, connecting holes are provided around the interior of the upper mold, and four columns pass through the connecting holes, and the upper mold slides along the four columns to cooperate with the lower mold to achieve mold closing.

[0011] Preferably, the upper and lower connecting members 1 are hinged to the connecting member 2 on the adjacent side, and the upper and lower connecting members 3 are hinged to the upper and lower connecting members 2. By starting the telescopic member to extend and retract, the connecting block is pushed to move to the left, thereby pushing the connecting member 2 and the connecting member 1 to rotate around the top seat and the upper mold respectively through the connecting member 3, thereby pushing the upper mold to slide to the left along the column, thereby realizing the clamping of the lower mold and the upper mold.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The large-stroke and high-rigidity clamping mechanism pushes the connecting block to move to the left by starting the telescopic part to extend and retract, thereby pushing the connecting part 2 and the connecting part 1 to rotate around the top seat and the upper mold respectively through the connecting part 3, thereby pushing the upper mold to slide to the left along the column to achieve the clamping of the lower mold and the upper mold. The clamping is achieved by moving the lower mold and the upper mold at the same time, shortening the stroke of the upper mold and improving the clamping efficiency.

[0014] 2. The large-stroke and high-rigidity clamping mechanism guides the upper and lower molds through four columns, thereby improving the clamping accuracy of the upper and lower molds and improving production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the connection between the top seat and the upper mold of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connection between the telescopic member and the connection block of the utility model;

[0018] Figure 4 It is a schematic diagram of the top seat structure of the utility model.

[0019] In the figure: 1. column; 2. lower mold; 3. top seat; 4. telescopic part; 5. connecting block; 6. upper mold; 7. connecting part 1; 8. connecting part 2; 9. connecting part 3. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0022] Embodiment 1:

[0023] A large-stroke high-rigidity clamping mechanism comprises a column 1, wherein the number of the columns 1 is four, and the columns 1 penetrate all around the inside of the lower mold 2, so that the lower mold 2 slides left and right along the surface of the column 1, and the four columns 1 guide the upper mold 6 and the lower mold 2, thereby improving the clamping accuracy of the upper mold 6 and the lower mold 2 and improving the production quality. The lower mold 2 is installed on the outer side of the left end of the column 1, and a top seat 3 is fixedly installed on the right end of the column 1. A telescopic member 4 is fixedly installed on the right side of the top seat 3. The telescopic member 4 comprises a hydraulic cylinder and a hydraulic rod. The hydraulic cylinder is fixedly installed on the right side of the top seat 3, and the hydraulic rod is installed on the output end of the hydraulic cylinder. A connecting block 5 is fixedly installed on the left side of the hydraulic rod. The output end of the telescopic member 4 is fixedly installed with a connecting block 5, and an upper mold is installed on the outer side of the column 1 between the lower mold 2 and the top seat 3 6. Connecting holes are provided around the inside of the upper mold 6, and four columns 1 pass through the connecting holes. The upper mold 6 slides along the four columns 1 to cooperate with the lower mold 2 to achieve mold closing. The upper and lower ends of the right side of the upper mold 6 are hinged with a connecting piece 7. The upper and lower connecting pieces 1 7 are hinged with the connecting piece 2 8 on the adjacent side. The upper and lower connecting pieces 3 9 are hinged with the upper and lower connecting pieces 2 8. By starting the telescopic piece 4 to telescope, the connecting block 5 is pushed to move to the left, so that the connecting piece 2 8 and the connecting piece 1 7 are pushed to rotate around the top seat 3 and the upper mold 6 respectively through the connecting piece 3 9, thereby pushing the upper mold 6 to slide to the left along the column 1 to achieve mold closing of the lower mold 2 and the upper mold 6. The upper and lower ends of the left side of the top seat 3 are hinged with a connecting piece 2 8, and the upper and lower ends of the connecting block 5 are hinged with a connecting piece 3 9.

[0024] When in use, push the lower mold 2 to slide to the right along the column 1, and at the same time start the telescopic part 4 to push the connecting block 5 to move to the left, thereby pushing the connecting part 2 8 and the connecting part 1 7 to rotate around the top seat 3 and the upper mold 6 respectively through the connecting part 3 9, thereby pushing the upper mold 6 to slide to the left along the column 1 until the lower mold 2 and the upper mold 6 are in contact, thereby realizing the mold closing of the lower mold 2 and the upper mold 6. When the mold needs to be opened, start the telescopic part 4 to contract and pull the connecting block 5 to move to the right, thereby pulling the connecting part 2 8 to rotate inward through the connecting part 3 9, thereby driving the connecting part 1 7 to rotate around the upper mold 6, thereby pulling the upper mold 6 to slide to the right along the column 1, separating the upper mold 6 from the lower mold 2, and realizing the mold opening.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A large-stroke and high-rigidity clamping mechanism, comprising a column (1), characterized in that: A lower mold (2) is installed on the outer side of the left end of the column (1), a top seat (3) is fixedly installed on the right end of the column (1), a telescopic member (4) is fixedly installed on the right side of the top seat (3), a connecting block (5) is fixedly installed on the output end of the telescopic member (4), an upper mold (6) is installed on the outer side of the column (1) between the lower mold (2) and the top seat (3), a connecting member 1 (7) is hinged at the upper and lower ends of the right side of the upper mold (6), a connecting member 2 (8) is hinged at the upper and lower ends of the left side of the top seat (3), and a connecting member 3 (9) is hinged at the upper and lower ends of the connecting block (5).

2. A long-stroke and high-rigidity clamping mechanism according to claim 1, characterized in that: The number of the columns (1) is four, and the columns (1) penetrate all around the interior of the lower mold (2).

3. The large-stroke and high-rigidity clamping mechanism according to claim 1, characterized in that: The upper mold (6) is provided with connection holes on all sides thereof, and four upright posts (1) pass through the connection holes.

4. The large-stroke and high-rigidity clamping mechanism according to claim 1, characterized in that: The two upper and lower connecting members 1 (7) are hinged to the connecting member 2 (8) on the adjacent side, and the two upper and lower connecting members 3 (9) are hinged to the two upper and lower connecting members 2 (8).

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