Multi-cavity direct pressing mold closing device with blowing plate

Abstract

The utility model discloses a multi-cavity direct pressing mould closing device with a blowing plate, which comprises a front mould plate, a rear mould plate, a movable mould plate and a quick mould moving mechanism, the quick mould moving mechanism comprises a high-pressure mould locking oil cylinder and a middle connecting rod, the high-pressure mould locking oil cylinder is provided with a locking rod buckle piston, the locking rod buckle piston is provided with a ring tooth groove, the middle connecting rod is provided with a ring tooth, and the middle connecting rod is provided with a blowing plate. A quick mold moving piston rod is arranged in the middle connecting rod, and a reversing groove is formed in the middle connecting rod. The pressure of the high-pressure mold locking oil cylinder acts on the movable mold plate by means of the middle connecting rod, the middle of the movable mold plate is stressed, and deformation and deflection cannot be generated. The front mold plate and the rear mold plate are rigidly connected into a whole through the pull rod, no mold adjusting mechanism is arranged, mold adjusting is conducted through meshing of the middle connecting rod and the ring teeth of the locking rod buckle piston, mold adjusting is not needed, stress of the pull rod is balanced, stress of the mold plates is uniform, product demolding becomes easy due to stress uniformity, and the air blowing plate on the movable mold plate can rapidly cool the product, so that the product is prone to falling off. And subsequent automatic operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to a multi-cavity direct pressure mold clamping device with a blowing plate. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Direct pressure clamping mechanism injection molding machines include direct braking type, liquid filling and pressure stabilizing type, liquid filling and pressure boosting type, etc. Some existing direct pressure clamping mechanisms are equipped with mold adjustment devices. The mold thickness is achieved by rotating the fasteners on the rear template and the threads on the pull rod. The characteristics are that the mold is locked by the large flow and high pressure hydraulic energy to push the dynamic template forward. When the melt enters the mold cavity, the additional clamping force is still maintained to ensure that the mold is not expanded. Due to the complex movements, the mold transfer and high pressure clamping process are slow, the idle cycle time is long, and the efficiency is low. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a multi-cavity direct pressure mold clamping device with a blowing plate.

[0004] According to the first embodiment of the utility model, a multi-cavity direct pressure mold clamping device with a blowing plate comprises:

[0005] front template;

[0006] A rear template, wherein the front template and the rear template are connected via a tie rod;

[0007] A movable template, the movable template is arranged between the front template and the rear template, and the movable template is provided with an ejection cylinder group and a blowing plate;

[0008] A rapid mold shifting mechanism, the rapid mold shifting mechanism comprises a high-pressure mold locking cylinder and an intermediate connecting rod, the high-pressure mold locking cylinder is arranged in the rear mold plate, the high-pressure mold locking cylinder is provided with a locking rod buckle piston, the locking rod buckle piston is provided with a ring tooth groove, one end of the intermediate connecting rod is provided with a ring tooth, a rapid mold shifting piston rod is provided in the intermediate connecting rod, one end of the intermediate connecting rod provided with the ring tooth passes through the ring tooth groove and is connected to the rear mold plate, and the end of the intermediate connecting rod away from the ring tooth is provided with a reversing groove.

[0009] A multi-cavity direct pressure mold clamping device with a blowing plate according to an embodiment of the first aspect of the utility model has at least the following beneficial effects: the multi-cavity direct pressure mold clamping device with a blowing plate of the utility model comprises a front mold plate, a rear mold plate, a movable mold plate and a rapid mold shifting mechanism, the rapid mold shifting mechanism comprises a high-pressure mold locking cylinder and an intermediate connecting rod, the high-pressure mold locking cylinder is provided with a locking rod buckle piston, the locking rod buckle piston is provided with an annular tooth groove, one end of the intermediate connecting rod is provided with an annular tooth, a rapid mold shifting piston rod is provided in the intermediate connecting rod, and the intermediate connecting rod is provided with a reversing groove. In the multi-cavity direct pressure mold clamping device with a blowing plate of the present application, the pressure of the high-pressure mold locking cylinder acts on the movable mold plate by means of the intermediate connecting rod, the movable mold plate is subjected to force in the middle, and deformation and disturbance will not occur. The front template and the rear template are rigidly connected by a tie rod. There is no mold adjustment mechanism. The mold adjustment is carried out by the engagement of the ring teeth of the middle connecting rod and the locking rod clip piston. There is no need to adjust the mold. The force on the tie rod is balanced, and the template is evenly stressed. The uniform force makes it easy to demould the product. The blowing plate on the moving template can quickly cool the product, making it easy to fall off, which is convenient for subsequent automated operations.

[0010] According to some embodiments of the utility model, the blowing plate is rotatably mounted on the movable platen.

[0011] According to some embodiments of the utility model, the high-pressure locking cylinder also includes a high-pressure locking cylinder barrel, a high-pressure locking front cover and a high-pressure locking bracket, the high-pressure locking cylinder barrel is used to accommodate the locking rod clip piston, and the high-pressure locking bracket is used to support the intermediate connecting rod.

[0012] According to some embodiments of the present utility model, the intermediate connecting rod is provided with an inner hole, and the rapid mold shifting piston rod is arranged in the inner hole.

[0013] According to some embodiments of the utility model, four tie rods are arranged between the front template and the rear template, the tie rods are rigidly connected to the front template, and the tie rods are rigidly connected to the rear template.

[0014] According to some embodiments of the utility model, pressure covers and fasteners are provided at both ends of the pull rod, and the pull rod is installed between the front template and the rear template through the fasteners and the pressure covers.

[0015] According to some embodiments of the utility model, the four corners of the front template are provided with first mounting holes, the four corners of the rear template are provided with second mounting holes, and the four pull rods are installed on the front template and the rear template through the first mounting holes and the second mounting holes.

[0016] According to some embodiments of the present utility model, the ejection cylinder group includes a main ejection cylinder and a plurality of auxiliary ejection cylinders.

[0017] According to some embodiments of the utility model, an ejector plate assembly is further provided, the main ejector oil cylinder is connected to the ejector plate assembly, and the ejector plate assembly includes an ejector plate, an ejector bushing and an ejector guide rod.

[0018] According to some embodiments of the utility model, eight groups of the auxiliary ejection oil cylinders are provided, and the eight groups of the auxiliary ejection oil cylinders are relatively arranged on both sides of the movable template.

[0019] 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

[0020] 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:

[0021] Figure 1 It is a structural schematic diagram of a multi-cavity direct pressure mold clamping device with a blowing plate according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 The structural schematic diagram of the middle connecting rod with the blowing plate shown;

[0023] Figure 3 for Figure 1 The structural schematic diagram of the locking rod snap piston is shown.

[0024] Reference numerals:

[0025] Front template 100;

[0026] Rear template 200;

[0027] Moving plate 300, blowing plate 310;

[0028] Tie rod 400, gland 410, fastener 420;

[0029] The middle connecting rod 510, the ring gear 511, the locking rod buckle piston 520, the ring gear groove 521, the high-pressure clamping cylinder 531, the high-pressure clamping bracket 532 and the high-pressure clamping front cover 533;

[0030] Main ejection cylinder 610 , auxiliary ejection cylinder 620 , and ejection plate 630 . DETAILED DESCRIPTION

[0031] 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.

[0032] In the description of the present invention, it should be understood that the descriptions involving orientations, such as up, down, front, back, left, right, inside, outside, etc., indicating orientations or positional relationships, 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.

[0033] 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.

[0034] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installing, connecting, assembling, and matching should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model based on the specific content of the technical solution.

[0035] Refer to the following Figures 1 to 3 The utility model is described in detail with respect to a multi-cavity direct pressure mold clamping device with a blowing plate according to an embodiment of the utility model.

[0036] A multi-cavity direct pressure mold clamping device with a blowing plate 310 according to an embodiment of the utility model is as follows Figures 1 to 3As shown, it includes a front template 100, a rear template 200, a movable template 300 and a rapid mold shifting mechanism. The front template 100 is connected to the rear template 200 by a tie rod 400. The front template 100 and the rear template 200 are connected by a tie rod 400. The tie rod 400 is balanced in force, and the template is evenly stressed. The uniform force makes it easy to demould the product. The movable template 300 is arranged between the front template 100 and the rear template 200. The movable template 300 is provided with an ejector oil cylinder group and a blowing plate 310. The blowing plate 310 on the movable template 300 can quickly cool the product, making it easy for the product to fall off. The ejector oil cylinder group ejects the product, which is convenient for subsequent automated operations. The rapid mold shifting mechanism includes a high-pressure mold locking cylinder and an intermediate connecting rod 510. The high-pressure mold locking cylinder is arranged in the rear mold plate 200. The high-pressure mold locking cylinder is provided with a locking rod buckle piston 520. The locking rod buckle piston 520 is provided with an annular tooth groove 521. One end of the intermediate connecting rod 510 is provided with an annular tooth 511. A rapid mold shifting piston rod 530 is arranged in the intermediate connecting rod 510. One end of the intermediate connecting rod 510 provided with the annular tooth 511 passes through the annular tooth groove 521 and is connected to the rear mold plate 200. The end of the intermediate connecting rod 510 away from the annular tooth 511 is provided with a reversing groove 512. The intermediate connecting rod 510 acts as a cylinder barrel of the rapid mold shifting piston rod 530. The rapid mold shifting piston rod 530 drives the movable mold plate 300 forward when the mold is closed, and the intermediate connecting rod 510 moves accordingly. The cylinder has a small area and a fast speed, and has the characteristics of large flow and low pressure, and has obvious advantages in mold shifting. The tail of the middle connecting rod 510 is provided with a reversing groove 512, and the ring teeth 511 of the middle connecting rod 510 match the ring teeth groove 521 of the locking rod buckle piston 520. When the locking rod buckle piston 520 rotates 45°, the ring teeth 511 mesh with the ring teeth groove 521, and the end of the middle connecting rod 510 with the reversing groove 512 supports the movable plate 300, which can clamp the mold. After injection, the high-pressure clamping cylinder continues to pressurize to ensure that the clamping force is not lost. The pressure of the high-pressure clamping cylinder acts on the movable plate 300 with the help of the middle connecting rod 510, and the movable plate 300 is stressed in the middle, and no deformation or disturbance occurs. The multi-cavity direct pressure mold clamping device with a blowing plate 310 of the present application does not have a mold adjustment mechanism. The mold adjustment is performed by the engagement of the ring teeth 511 of the middle connecting rod 510 and the locking rod clamping piston 520. There is no need for mold adjustment. The pull rod 400 forms a closed force line between the front template 100 and the rear template 200. The pull rod 400 is balanced in force, and the templates are evenly stressed. The blowing plate 310 on the movable template 300 can also quickly cool the product. The rapid cooling and uniform force make the product easy to fall off, which is convenient for subsequent automated operations.

[0037] Reference Figure 1According to some embodiments of the utility model, the blowing plate 310 is rotatably mounted on the movable mold plate 300. The blowing plate 310 is used to cool the product so that the product becomes easy to fall off. Specifically, the blowing plate 310 is arranged on the movable mold plate 300, and the blowing plate 310 can rotate relative to the movable mold plate 300. The rotatable blowing plate 310 can blow and cool various parts of the product, which is convenient for uniform cooling and demoulding of the product.

[0038] Reference Figure 1 and Figure 2 According to some embodiments of the utility model, the high-pressure locking cylinder also includes a high-pressure locking cylinder barrel 531, a high-pressure locking front cover 533 and a high-pressure locking bracket 532. The high-pressure locking cylinder barrel 531 is used to accommodate the locking rod buckle piston 520, and the locking rod buckle piston 520 is placed in the high-pressure locking cylinder barrel 531. The high-pressure locking bracket 532 is used to support the intermediate connecting rod 510, and the intermediate connecting rod 510 passes through the high-pressure locking bracket 532 and is connected to the rear template 200.

[0039] Reference Figure 2 According to some embodiments of the utility model, the middle connecting rod 510 is provided with an inner hole, and the fast mold shifting piston rod 530 is arranged in the inner hole. The fast mold shifting piston rod 530 is arranged in the inner hole of the middle connecting rod 510, and the middle connecting rod 510 acts as the cylinder of the fast mold shifting piston rod 530. The fast mold shifting piston rod 530 drives the movable mold plate 300 forward when the mold is closed, and the middle connecting rod 510 moves accordingly. The oil cylinder has a small area and a fast speed, and has the characteristics of large flow and low pressure. The pressure of the high-pressure clamping oil cylinder acts on the movable mold plate 300 with the help of the middle connecting rod 510, and the movable mold plate 300 is subjected to force in the middle, and no deformation and disturbance will occur.

[0040] Reference Figure 1 According to some embodiments of the present invention, four tie rods 400 are provided between the front template 100 and the rear template 200 , and the tie rods 400 are rigidly connected to the front template 100 , and the tie rods 400 are rigidly connected to the rear template 200 . The front template 100 and the rear template 200 are connected and fixed by four tie rods 400. Specifically, in some embodiments, the four corners of the front template 100 are provided with first mounting holes, and the four corners of the rear template 200 are provided with second mounting holes. The four tie rods 400 are installed on the front template 100 and the rear template 200 through the first mounting holes and the second mounting holes. The four tie rods 400 are arranged at the four corners of the front template 100 and the rear template 200. The tie rods 400 are rigidly connected to the front template 100, and the tie rods 400 are rigidly connected to the rear template 200. Since there is no mold adjustment mechanism, the four tie rods 400 are fixed at the four corners of the front template 100 and the rear template 200, forming a closed force line between the front template 100 and the rear template 200. The strain force of the four tie rods 400 is uniform, and good mold closing can be achieved.

[0041] Reference Figure 1 According to some embodiments of the utility model, a gland 410 and a fastener 420 are provided at both ends of the tie rod 400, and the tie rod 400 is installed between the front template 100 and the rear template 200 through the fastener 420 and the gland 410. The tie rod 400 is rigidly connected to the front template 100 and the rear template 200. Specifically, the gland 410 is sleeved on both ends of the tie rod 400, and the fastener 420 passes through the gland 410 and is threadedly connected to the front template 100 and the rear template 200, so that the tie rod 400 can be fixed on the front template 100 and the rear template 200. It can be understood that in some other embodiments, the tie rod 400 is provided with an external thread, and the front template 100 and the rear template 200 are provided with an internal thread, which can also achieve the rigid connection between the tie rod 400 and the front template 100 and the rear template 200.

[0042] Reference Figure 1 According to some embodiments of the utility model, the ejection cylinder group includes a main ejection cylinder 610 and a plurality of auxiliary ejection cylinders 620. The main ejection cylinder 610 is used to directly eject the product, and the auxiliary ejection cylinder 620 acts on the mold top plate. The auxiliary ejection cylinder 620 is used to overcome the static friction of the multi-cavity product. The main ejection cylinder 610 cooperates with the auxiliary ejection cylinder 620. The setting of multiple ejection groups can make the product evenly stressed and will not deform during ejection, thereby ensuring the quality of the product.

[0043] Reference Figure 1 According to some embodiments of the utility model, an ejector plate assembly is also provided, the main ejector oil cylinder 610 is connected to the ejector plate assembly, and the ejector plate assembly includes an ejector plate 630, an ejector bushing, and an ejector guide rod. The ejector plate 630 is provided with a plurality of holes, the ejector bushing is installed in the holes, the ejector guide rod is installed in the bushing, the ejector guide rod can guide and limit the movement of the ejector plate 630, and the ejector bushing can protect the ejector guide rod from wear, thereby avoiding serious wear between the ejector plate 630 and the ejector guide rod during the ejection process.

[0044] Reference Figure 1 According to some embodiments of the utility model, eight groups of auxiliary ejection oil cylinders 620 are provided, and the eight groups of auxiliary ejection oil cylinders 620 are relatively arranged on both sides of the movable platen 300. The auxiliary ejection oil cylinders 620 are used to overcome the static friction of multi-cavity products. The auxiliary ejection oil cylinders 620 are provided in eight groups. Specifically, eight groups of auxiliary ejection oil cylinders 620 are relatively arranged on both sides of the movable platen 300, four groups of auxiliary ejection oil cylinders 620 are arranged on the upper side of the movable platen 300, and four groups of auxiliary ejection oil cylinders 620 are arranged on the lower side of the movable platen 300. The auxiliary ejection oil cylinders 620 and the main ejection oil cylinders 610 together balance and quickly and evenly eject the products. Even if the friction of the product is large after overcooling and demolding is difficult, the additional ejection force added by the auxiliary ejection oil cylinders 620 can ensure that the product falls off.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A multi-cavity direct pressure mold clamping device with a blowing plate, characterized in that: include: front template; A rear template, wherein the front template and the rear template are connected via a tie rod; A movable template, the movable template is arranged between the front template and the rear template, and the movable template is provided with an ejection cylinder group and a blowing plate; A rapid mold shifting mechanism, the rapid mold shifting mechanism comprises a high-pressure mold locking cylinder and an intermediate connecting rod, the high-pressure mold locking cylinder is arranged in the rear mold plate, the high-pressure mold locking cylinder is provided with a locking rod buckle piston, the locking rod buckle piston is provided with a ring tooth groove, one end of the intermediate connecting rod is provided with a ring tooth, a rapid mold shifting piston rod is provided in the intermediate connecting rod, one end of the intermediate connecting rod provided with the ring tooth passes through the ring tooth groove and is connected to the rear mold plate, and the end of the intermediate connecting rod away from the ring tooth is provided with a reversing groove.

2. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 1, characterized in that: The blowing plate can be rotatably mounted on the movable template.

3. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 1, characterized in that: The high-pressure mold locking cylinder also includes a high-pressure mold locking cylinder barrel, a high-pressure mold locking front cover and a high-pressure mold locking bracket. The high-pressure mold locking cylinder barrel is used to accommodate the locking rod buckle piston, and the high-pressure mold locking bracket is used to support the intermediate connecting rod.

4. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 1, characterized in that: The middle connecting rod is provided with an inner hole, and the rapid mold shifting piston rod is arranged in the inner hole.

5. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 1, characterized in that: Four tie rods are arranged between the front template and the rear template. The tie rods are rigidly connected to the front template, and the tie rods are rigidly connected to the rear template.

6. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 5, characterized in that: Both ends of the pull rod are provided with pressure covers and fasteners, and the pull rod is installed between the front template and the rear template through the fasteners and the pressure covers.

7. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 5, characterized in that: The four corners of the front template are provided with first mounting holes, the four corners of the rear template are provided with second mounting holes, and the four pull rods are installed on the front template and the rear template through the first mounting holes and the second mounting holes.

8. The multi-cavity direct pressure mold clamping device with a blowing plate according to claim 1, characterized in that: The ejection cylinder group comprises a main ejection cylinder and a plurality of auxiliary ejection cylinders.

9. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 8, characterized in that: An ejector plate assembly is also provided, the main ejector oil cylinder is connected to the ejector plate assembly, and the ejector plate assembly comprises an ejector plate, an ejector bushing and an ejector guide rod.

10. A multi-cavity direct pressure mold clamping device with a blowing plate according to claim 8, characterized in that: The auxiliary ejection oil cylinders are provided in eight groups, and the eight groups of the auxiliary ejection oil cylinders are relatively arranged on both sides of the movable template.

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