Hollow blow molding machine mold closing device with cooling function

Abstract

The invention discloses a hollow blow molding machine mold closing device with a cooling function, and relates to the technical field of hollow blow molding machines, the hollow blow molding machine mold closing device comprises a blow molding machine main body, a base, a driving mechanism, a linkage mechanism, a cooling mechanism, a front mold and a rear mold, the base is arranged on the blow molding machine main body; the driving mechanism is installed at the top of the base, the cooling mechanism is arranged on the inner side of the driving mechanism, the bottom end of the cooling mechanism is connected to the upper portion of the linkage mechanism, and the front mold and the rear mold are installed on the cooling mechanism; and the linkage mechanism drives the cooling mechanism to move and synchronously drives the front mold and the rear mold to perform mold closing operation and mold opening operation. When the mold is changed, a cooling mechanism does not need to be adjusted, operation steps and the mold structure are simplified, and cost is reduced; an indirect cooling mode is adopted, so that the mold is in an approximately constant-temperature state, the cooling effect is stable during continuous working, and the forming effect is improved; and the front cooling plate and the rear cooling plate can be driven to move by using one cylinder, so that the manufacturing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of blow molding machines, in particular to a mold clamping device of a hollow blow molding machine with a cooling function. Background Art

[0002] During the blow molding process, the cooling temperature and time control the appearance quality and geometric shape of the product. Appropriate cooling time can prevent the deformation of the plastic caused by elastic recovery, make the product shape regular and have good surface quality, avoid internal stress and cracking caused by rapid cooling, and thus ensure the mechanical properties and durability of the product. However, most of the existing clamping devices with cooling functions directly cool the mold, and the mold has built-in cooling pipelines, which leads to complex processing and high costs. Moreover, when replacing the mold, the cooling pipeline needs to be adjusted, which is complicated and easy to cause coolant leakage.

[0003] Therefore, how to provide a hollow blow molding machine mold clamping device with a cooling function, using an indirect cooling mold method to achieve the effect of simplifying the mold structure and the operating steps when replacing the mold has become a technical problem that needs to be urgently solved by people in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a mold clamping device for a hollow blow molding machine with a cooling function, so as to solve the problems of complex mold structure and high difficulty in mold replacement operation in the existing device.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention discloses a mold closing device for a hollow blow molding machine with a cooling function, comprising a blow molding machine body, a base, a driving mechanism, a linkage mechanism, a cooling mechanism, and a front mold and a rear mold that enclose a mold cavity; the base is arranged on the blow molding machine body; the driving mechanism is installed on the top of the base, the cooling mechanism is arranged on the inner side of the driving mechanism, the bottom end of the cooling mechanism is connected to the top of the linkage mechanism, and the front mold and the rear mold are installed on the cooling mechanism; the linkage mechanism drives the cooling mechanism to move, and synchronously drives the mold closing operation and mold opening operation of the front mold and the rear mold.

[0007] Preferably, the driving mechanism includes a fixed plate and a mold closing cylinder; the bottom end of the fixed plate is fixedly mounted on the top side of the base, the fixed end of the mold closing cylinder is fixedly mounted on the fixed plate, and the working end of the mold closing cylinder is connected to the front cooling plate in the cooling mechanism.

[0008] Preferably, the linkage mechanism includes a first rack, a second rack, a third rack, a first gear, a second gear and a top plate; a receiving groove is provided at the top of the base, the linkage mechanism is arranged in the receiving groove, the top plate is fixedly connected to the top and is coplanar with the top of the base, the first gear, the second rack and the base are rotatably connected together, the first gear is located between the first rack and the second rack and are meshed with each other, the second gear is located between the first rack and the third rack and are meshed with each other; a plurality of guide grooves are provided on the top plate, the top of the first rack passes through the guide groove and is connected to the front cooling plate in the cooling mechanism; the tops of the second rack and the third rack pass through the guide groove and are connected to the rear cooling plate in the cooling mechanism.

[0009] Preferably, one side of the first rack is linked to the second rack through the first gear; the other side of the first rack is linked to the third rack through the second gear.

[0010] Preferably, the cooling mechanism includes a front cooling plate, a rear cooling plate, a circulation pipeline, a liquid storage tank and a circulation water pump; the liquid storage tank is arranged on the outside of the fixed plate, and two of the circulation water pumps are built into the liquid storage tank; part of the circulation pipeline is arranged inside the front cooling plate and the rear cooling plate to form a cooling channel, and the liquid storage tank is connected to the cooling channels on the front cooling plate and the rear cooling plate respectively through two external circulation pipelines, and two cooling circulation channels are formed.

[0011] Preferably, the circulating water pump drives the coolant to flow, and the coolant in the liquid storage tank flows through the two circulating pipelines to the cooling channels on the front cooling plate and the rear cooling plate to complete the circulating cooling operation.

[0012] Preferably, positioning grooves are provided on the opposite surfaces of the front cooling plate and the rear cooling plate, the front mold is clamped in the positioning groove of the front cooling plate and fixed by bolts; the rear mold is clamped in the positioning groove of the rear cooling plate and fixed by bolts.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are:

[0014] The present invention discloses a mold clamping device for a hollow blow molding machine with a cooling function, comprising a blow molding machine body, a base, a driving mechanism, a linkage mechanism, a cooling mechanism, and a front mold and a rear mold that enclose a mold cavity; the driving mechanism comprises a fixed plate and a mold clamping cylinder; the linkage mechanism comprises a first rack, a second rack, a third rack, a first gear, a second gear and a top plate; the cooling mechanism comprises a front cooling plate, a rear cooling plate, a circulation pipeline, a liquid storage tank and a circulation water pump;

[0015] 1) The cooling mechanism and the mold are set independently, which simplifies the mold structure. When changing the mold, there is no need to adjust the cooling mechanism, which simplifies the operation steps and reduces the mold production cost;

[0016] 2) The cooling mechanism adopts indirect cooling, which makes the mold in a state of approximately constant temperature. When working continuously, the cooling effect is relatively stable, which improves the molding effect;

[0017] 3) The setting of the linkage device can drive the front cooling plate and the rear cooling plate to move relative to each other while using one cylinder, thereby reducing the production cost.

[0018] The present application discloses a mold clamping device for a hollow blow molding machine with a cooling function. The cooling mechanism and the mold are independently arranged. When the mold is replaced, there is no need to adjust the cooling mechanism, which simplifies the operation steps and the mold structure, and reduces the production cost and the learning cost. An indirect cooling method is adopted to keep the mold in a state of approximately constant temperature. When working continuously, the cooling effect is more stable, and the molding effect is improved. One cylinder can be used to simultaneously drive the front cooling plate and the rear cooling plate to move relative to each other, which reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of a mold clamping device of a hollow blow molding machine with a cooling function according to the present invention;

[0021] Figure 2 It is a cross-sectional view of the mold clamping device of the hollow blow molding machine with cooling function of the present invention;

[0022] Figure 3 It is a schematic diagram of the linkage mechanism of the present invention.

[0023] Description of reference numerals: 1. Blow molding machine body; 2. Base; 3. Driving mechanism; 4. Linkage mechanism; 5. Cooling mechanism; 6. Front mold; 7. Rear mold;

[0024] 301, fixed plate; 302, clamping cylinder;

[0025] 401, first rack; 402, second rack; 403, third rack; 404, first gear; 405, second gear; 406, top plate;

[0026] 501, front cooling plate; 502, rear cooling plate; 503, circulation pipeline; 504, liquid storage tank; 505, circulation water pump. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1-3 As shown, a hollow blow molding machine mold closing device with a cooling function includes a blow molding machine body 1, a base 2, a driving mechanism 3, a linkage mechanism 4, a cooling mechanism 5, and a front mold 6 and a rear mold 7 that enclose a mold cavity; the base 2 is arranged on the blow molding machine body 1; the driving mechanism 3 is installed on the top of the base 2, the cooling mechanism 5 is arranged on the inner side of the driving mechanism 3, the bottom end of the cooling mechanism 5 is connected to the top of the linkage mechanism 4, and the front mold 6 and the rear mold 7 are installed on the cooling mechanism 5; the linkage mechanism 4 drives the cooling mechanism 5 to move, and synchronously drives the front mold 6 and the rear mold 7 to perform mold closing and mold opening operations.

[0029] Specifically, the driving mechanism 3 includes a fixed plate 301 and a mold clamping cylinder 302; the bottom end of the fixed plate 301 is fixedly mounted on the top side of the base 2, the fixed end of the mold clamping cylinder 302 is fixedly mounted on the fixed plate 301, and the working end of the mold clamping cylinder 302 is connected to the front cooling plate 501 in the cooling mechanism 5; the mold clamping cylinder 302 serves as a power source for mold clamping and can be replaced with a hydraulic cylinder or an electric telescopic rod as needed.

[0030] Specifically, the linkage mechanism 4 includes a first rack 401, a second rack 402, a third rack 403, a first gear 404, a second gear 405 and a top plate 406; a receiving groove is provided on the top of the base 2, and the linkage mechanism 4 is arranged in the receiving groove, the top plate 406 is fixedly connected to the top and is coplanar with the top of the base 2, and the first gear 404, the second rack 402 and the base 2 are rotatably connected together; a plurality of guide grooves are provided on the top plate 406, the top of the first rack 401 passes through the guide groove to be connected to the front cooling plate 501 in the cooling mechanism 5; the tops of the second rack 402 and the third rack 403 pass through the guide groove to be connected to the rear cooling plate 502 in the cooling mechanism 5; the linkage device can drive the front cooling plate 501 and the rear cooling plate 502 to move at the same time when only one mold clamping cylinder 302 is used, which saves costs, and the top plate 406 can prevent debris from obstructing gear meshing.

[0031] Specifically, one side of the first rack 401 is linked to the second rack 402 through the first gear 404; the other side of the first rack 401 is linked to the third rack 403 through the second gear 405; the meshing transmission efficiency is higher and can ensure the synchronous movement of the front mold 6 and the rear mold 7.

[0032] Specifically, the cooling mechanism 5 includes a front cooling plate 501, a rear cooling plate 502, a circulation pipeline 503, a liquid storage tank 504 and a circulation water pump 505; the liquid storage tank 504 is arranged on the outside of the fixed plate 301, and the liquid storage tank 504 has two circulating water pumps 505 built in. Driven by the circulating water pump 505, the liquid storage tank 504 is connected with the two circulation pipelines 503 to form two cooling cycles, and part of the circulation pipelines 503 are arranged inside the front cooling plate 501 and the rear cooling plate 502; the cooling mechanism 5 is independently arranged with the mold, so when the mold is replaced, there is no need to adjust the cooling system, which simplifies the operation steps and mold structure and reduces the production cost; the cooling mechanism adopts indirect cooling, so that the mold is in a state of approximately constant temperature. When working continuously, the cooling effect is stable, which improves the molding effect.

[0033] Specifically, the front cooling plate 501 and the rear cooling plate 502 are located on different cooling cycles; they are set separately so that the temperatures of the front mold 6 and the rear mold 7 are the same to avoid affecting the molding effect due to uneven cooling; the circulation pipeline 503 inside the front cooling plate 501 and the rear cooling plate 502 is arranged in a serpentine coil shape to increase the heat exchange area.

[0034] Specifically, positioning grooves are provided on the opposite surfaces of the front cooling plate 501 and the rear cooling plate 502, and the front mold 6 is clamped in the positioning groove of the front cooling plate 501 and fixed by bolts; the rear mold 7 is clamped in the positioning groove of the rear cooling plate 502 and fixed by bolts; the cooling plate can cool the mold in all directions, increase the cooling speed, and thus improve production efficiency.

[0035] The use process of the present invention is as follows:

[0036] First, the circulating water pump 505 drives the coolant in the liquid storage tank 504 to circulate along the circulating pipeline 503. During the circulation process, the coolant cools the front cooling plate 501 and the rear cooling plate 502. The cooled front cooling plate 501 and the rear cooling plate 502 further cool the front mold 6 and the rear mold 7.

[0037] During blow molding, the mold closing cylinder 302 pushes the front cooling plate 501 to move, and the front cooling plate 501 drives the rear cooling plate 502 to move relatively through the linkage mechanism 4 to complete the mold closing; after the gas is introduced, the plastic gradually expands and contacts the cooled front mold 6 and rear mold 7, achieving rapid cooling. According to the subsequent test sample molding condition, the speed of the circulating water pump 505 is adjusted, thereby adjusting the cooling temperature of the front mold 6 and rear mold 7 to improve the molding condition;

[0038] When replacing the mold, you only need to loosen the bolts between the mold and the cooling plate, pull the mold upward, then insert the new mold into the positioning slot on the cooling plate, tighten the bolts, and complete the replacement operation.

[0039] 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.

[0040] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A mold clamping device for a hollow blow molding machine with a cooling function, characterized in that: The invention comprises a blow molding machine body (1), a base (2), a driving mechanism (3), a linkage mechanism (4), a cooling mechanism (5), and a front mold (6) and a rear mold (7) which enclose a mold cavity; the base (2) is arranged on the blow molding machine body (1); the driving mechanism (3) is installed on the top of the base (2); the cooling mechanism (5) is arranged on the inner side of the driving mechanism (3); the bottom end of the cooling mechanism (5) is connected to the top of the linkage mechanism (4); the front mold (6) and the rear mold (7) are installed on the cooling mechanism (5); the linkage mechanism (4) drives the cooling mechanism (5) to move, and synchronously drives the front mold (6) and the rear mold (7) to perform mold closing and mold opening operations.

2. The mold clamping device of the hollow blow molding machine with cooling function according to claim 1, characterized in that: The driving mechanism (3) comprises a fixed plate (301) and a mold clamping cylinder (302); the bottom end of the fixed plate (301) is fixedly mounted on one side of the top of the base (2), the fixed end of the mold clamping cylinder (302) is fixedly mounted on the fixed plate (301), and the working end of the mold clamping cylinder (302) is connected to the front cooling plate (501) in the cooling mechanism (5).

3. The mold clamping device of the hollow blow molding machine with cooling function according to claim 1, characterized in that: The linkage mechanism (4) comprises a first rack (401), a second rack (402), a third rack (403), a first gear (404), a second gear (405) and a top plate (406); a receiving groove is provided at the top of the base (2), the linkage mechanism (4) is arranged in the receiving groove, the top plate (406) is fixedly connected to the top and is coplanar with the top of the base (2), the first gear (404), the second rack (402) and the base (2) are rotatably connected together, and the first gear (404) is located on the first gear. The first rack (401) and the second rack (402) are meshed and connected with each other, and the second gear (405) is located between the first rack (401) and the third rack (403) and are meshed and connected with each other; a plurality of guide grooves are provided on the top plate (406), and the top of the first rack (401) passes through the guide groove and is connected to the front cooling plate (501) in the cooling mechanism (5); the tops of the second rack (402) and the third rack (403) pass through the guide groove and are connected to the rear cooling plate (502) in the cooling mechanism (5).

4. The mold clamping device of the hollow blow molding machine with cooling function according to claim 3, characterized in that: One side of the first rack (401) is linked to the second rack (402) via the first gear (404); the other side of the first rack (401) is linked to the third rack (403) via the second gear (405).

5. The mold clamping device of the hollow blow molding machine with cooling function according to claim 2, characterized in that: The cooling mechanism (5) comprises a front cooling plate (501), a rear cooling plate (502), a circulation pipeline (503), a liquid storage tank (504) and a circulation water pump (505); the liquid storage tank (504) is arranged on the outside of the fixed plate (301), and the liquid storage tank (504) has two circulation water pumps (505) built in; part of the circulation pipeline (503) is arranged inside the front cooling plate (501) and the rear cooling plate (502) to form a cooling channel, and the liquid storage tank (504) is connected to the cooling channels on the front cooling plate (501) and the rear cooling plate (502) respectively through two external circulation pipelines (503), thereby forming two cooling circulation channels.

6. The mold clamping device of the hollow blow molding machine with cooling function according to claim 5, characterized in that: The circulating water pump (505) drives the coolant to flow, and the coolant in the liquid storage tank (504) flows through the two circulating pipelines (503) to the cooling channels on the front cooling plate (501) and the rear cooling plate (502), thereby completing the circulating cooling operation.

7. The mold clamping device of the hollow blow molding machine with cooling function according to claim 3, characterized in that: Positioning grooves are provided on the opposite surfaces of the front cooling plate (501) and the rear cooling plate (502); the front mold (6) is clamped in the positioning groove of the front cooling plate (501) and fixed by bolts; the rear mold (7) is clamped in the positioning groove of the rear cooling plate (502) and fixed by bolts.

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