Mold closing guide device of plastic product forming machine

Abstract

The utility model relates to a mold closing guide device of a plastic product forming machine, which is characterized in that a lower mold base is connected with lifting sliding plates on the left side and the right side through rotating shafts, the lifting sliding plates are arranged on vertical sliding rails of a forming machine body, a mounting base is arranged on the lower mold base, a connecting plate is assembled on the mounting base, and a guide wheel is arranged on the connecting plate; the inner side of the forming machine body is provided with a vertical guide groove allowing the guide wheel to ascend, cooperate and enter in a guiding mode, the lower forming die installed on the lower die base is further provided with a die assembly auxiliary guide hole, the upper forming die installed on the upper die base is further provided with die assembly auxiliary guide pin shafts, and the die assembly auxiliary guide pin shafts are located on the left side and the right side of the upper forming die. Under the condition that the lower die holder is connected to a lifting sliding plate through a rotating shaft and is matched with a vertical sliding rail for lifting guiding, the relative position of the lower die holder during die assembly is additionally restrained through double effects, and the situation that die assembly is affected due to slight shaking and shaking in the operation process of the lower die holder is avoided; the quality of a plastic product is relatively higher, mold closing is stable and smooth, mold abrasion is relieved, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model relates to a mold closing guide device of a plastic product forming machine. Background Art

[0002] The lower mold (i.e., molding lower mold) of the molding mechanism in the plastic product molding machine is used to cooperate with the plastic product molding operation. For example, CN214872609U discloses a flip mold mechanism of a plastic product thermoforming machine, in which a lower mold base for mounting the lower mold is arranged on lifting slides on the left and right sides through a rotating shaft. The lower mold flips and lifts with the lower mold base. The lifting slides on the left and right sides are guided by vertical slide rails to lift and lower the lower mold base. When the lower mold base rises, the lower mold on the lower mold base will be molded with the upper mold (molding upper mold) on the upper mold base. In this structure, the quality of the plastic product after molding is relatively low, the mold wears quickly, and the mold service life is relatively low. Utility Model Content

[0003] In view of the technical problems existing in the background technology, the technical problem solved by the utility model is to provide a mold closing guide device for a plastic product molding machine, which improves the molding quality and the service life of the mold by making the mold closing process more stable and the lower mold less likely to shake and tremble.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a mold closing guide device of a plastic product molding machine, the lower mold base is connected to the lifting slide plates on the left and right sides through a rotating shaft, and the lifting slide plates are arranged on the vertical slide rails of the molding machine body, characterized in that: a mounting base is provided on the lower mold base, the mounting base is arranged on the right side of the lower mold base, a connecting plate is assembled on the mounting base, a guide wheel is provided on the connecting plate, a vertical guide groove for the guide wheel to rise and enter is provided on the inner side of the molding machine body, a mold closing auxiliary guide hole is also provided on the molding lower mold installed on the lower mold base, the mold closing auxiliary guide hole is located on the left and right sides of the molding lower mold, the mounting base, the connecting plate and the guide wheel are located on the outside of the mold closing auxiliary guide hole, and a mold closing auxiliary guide pin is also provided on the molding upper mold installed on the upper mold base, the mold closing auxiliary guide pin is located on the left and right sides of the molding upper mold, and the mold closing auxiliary guide pin corresponds to the mold closing auxiliary guide hole.

[0005] The following various optimizations or supplementary explanations can be made on the above technical solutions respectively.

[0006] For example, the mounting base is a boss structure, and a concave step is provided at the bottom of the connecting plate. The concave step is located on the outside of the connecting plate. The concave step is matched and mounted on the boss structure of the mounting base. There are also upper and lower fasteners and left and right fasteners connected between the connecting plate and the mounting base.

[0007] For another example, a avoidance recess is provided on the inner side of the connecting plate, the mounting shaft of the guide wheel is arranged on the connecting plate, the mounting shaft is connected to the avoidance recess, the guide wheel is arranged at the outer end of the mounting shaft, a fastening nut is arranged at the inner end of the mounting shaft, the fastening nut is located in the avoidance recess, and the avoidance recess has openings facing upward and inward relative to the upper mold base.

[0008] For example, a first guide block and a second guide block are arranged on the inner side of the molded body, and a vertical guide groove is formed between the first guide block and the second guide block.

[0009] In addition, the first guide block and the second guide block are provided with a guide surface at the input end of the vertical guide groove.

[0010] For example, the import surface is set to import slope or import surface.

[0011] In addition, a support plate is connected to the inner side of the molded body, and the first guide block and the second guide block are located on the support plate.

[0012] The beneficial effect of the utility model is that, in the mold closing guide device of the plastic product molding machine, when the lower mold base is connected to the lifting slide plate through a rotating shaft and is lifted and guided by the vertical slide rail, the relative position of the lower mold base during mold closing will be additionally constrained through dual effects. The guide wheel cooperates with the vertical guide groove and the mold closing auxiliary pin cooperates with the mold closing auxiliary guide hole to constrain the relative position of the lower mold base during mold closing, thereby avoiding (slight) shaking and trembling of the lower mold base during operation (due to flipping inertia) that affects the mold closing, so that the quality of the plastic product is relatively higher, the mold closing is stable and smooth, the wear of the mold (molding upper mold and molding lower mold) is reduced, and the service life of the mold is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following describes the relevant details and working principles of the implementation methods and embodiments of the present utility model in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the structure from another angle showing the hidden part of the structure.

[0016] Figure 3 for Figure 2 Schematic diagram of the structure after the connecting plate is hidden.

[0017] In the figure: 2, upper mold base; 3, column; 42, molding body; 84, rotating shaft; 85, lower mold base; 86, lifting slide plate; 87, vertical slide rail; 89, mounting base; 90, connecting plate; 91, guide wheel; 93, molding lower mold; 94, mold closing auxiliary guide hole; 95, mold closing auxiliary guide pin; 96, vertical hole; 97, horizontal hole; 98, avoidance recess; 99, mounting shaft; 101, first guide block; 102, second guide block; 104, support plate; 106, molding upper mold. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the implementation of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments of the utility model are within the scope of protection of the utility model.

[0019] Referring to the accompanying drawings, in the embodiment of the present embodiment, the mold closing guide device of the plastic product molding machine, that is, the lower mold base 85 (lower mold) rising mold closing guide structure. The lower mold base 85 with flipping and lifting action in the plastic product molding machine cooperates with the upper mold base 2 correspondingly arranged at the top. In the figure, the upper mold base 2 is arranged on the column 3 of the molding machine body 42, the molding upper mold 106 is arranged on the upper mold base 2, and the molding lower mold 93 is arranged on the lower mold base 85, wherein the lower mold base 85 is connected to the lifting slides 86 on the left and right sides through the rotating shaft 84, and the lifting slides 86 are arranged on the vertical slide rails 87 of the molding machine body 42; during the molding process, the lower mold base 85 can be flipped back and forth around the rotating shaft 84, and can be lifted and lowered along the vertical slide rails 87, and the molding lower mold 93 is installed on the lower mold base 85, and the molding lower mold 93 moves together with the lower mold base 85 to cooperate with the molding upper mold (installed on the upper mold base) to close the mold, which is a mature technology and will not be repeated.

[0020] In the utility model, the molding quality of plastic products is improved, the wear of the mold (molding upper mold and molding lower mold 93) is reduced, and the service life of the mold is increased. It is now found that the problem in the background technology is caused by the fact that the mold is only closed by the lifting slide 86 on the vertical slide rail 87 to guide the lifting and lowering, which is prone to shaking. This slight shaking and shaking during the mold closing process is difficult to detect, but it is enough to affect the molding quality of the plastic products and cause rapid wear of the mold, affecting its service life.

[0021] For this purpose, in the utility model, a mounting base 89 is provided on the lower mold base 85, and the mounting base 89 is arranged on the right side of the lower mold base 85, that is, the mounting base 89 is set on the right side of the lower mold base 85, and a connecting plate 90 is assembled on the mounting base 89 to facilitate the disassembly, maintenance and replacement of the connecting plate 90, and a guide wheel 91 is provided on the connecting plate 90; a vertical guide groove is provided on the inner side of the molding body 42, and the vertical guide groove can allow the guide wheel 91 (following the lower mold base 85) to rise and enter for guidance, and the vertical guide groove cooperates with the limiting guide wheel 91 to rise, and the relative position is constrained during the mold closing process to prevent the lower mold base 85 from shaking and trembling. In addition, the molding lower mold 93 installed on the lower mold base 85 also has a mold-closing auxiliary guide hole 94, which is located on the left and right sides of the molding lower mold 93. The middle area of ​​the molding lower mold 93 is used for molding plastic products. The mounting base 89, the connecting plate 90 and the guide wheel 91 are located on the outside of the mold-closing auxiliary guide hole 94 (on the right side in the figure), which does not affect the normal mold closing and auxiliary guidance; and the molding upper mold 106 installed on the upper mold base also has a mold-closing auxiliary guide pin shaft 95, which is 95 is located on the left and right sides of the molding upper mold 106. The mold closing auxiliary guide pins 95 correspond to the mold closing auxiliary guide holes 94. During the mold closing process, the upper mold closing auxiliary guide pins 95 can be relatively inserted into the lower mold closing auxiliary guide holes 94. With the auxiliary guide, the guide wheels 91 and the vertical guide grooves can be used to constrain the relative position of the lower mold base 85 during the mold closing process. The dual role in the mold closing process constrains the relative position of the lower mold base 85 to ensure that the lower mold base 85 (and the molding lower mold 93 above) avoids shaking during the mold closing. When opening the mold, the guide wheel 91 descends with the lower mold base 85 and is guided by the vertical guide groove to descend. The lower mold closing auxiliary guide hole 94 is separated from the upper mold closing auxiliary guide pins 95 along with the lower mold base 85.

[0022] In the mold closing guide device of the plastic product molding machine, when the lower mold base 85 is connected to the lifting slide plate 86 through the rotating shaft 84 and is lifted and guided by the vertical slide rail 87, the relative position of the lower mold base 85 during mold closing will be additionally constrained through dual effects. The guide wheel 91 cooperates with the vertical guide groove and the mold closing auxiliary pin and the mold closing auxiliary guide hole 94 to constrain the relative position of the lower mold base 85 during mold closing, thereby avoiding (slight) shaking and trembling of the lower mold base 85 during operation (due to reasons such as flipping inertia) that affects the mold closing, so that the quality of the plastic product is relatively higher, the mold closing is stable and smooth, the wear of the mold (molding upper mold and molding lower mold 93) is reduced, and the service life of the mold is increased.

[0023] The following optimization or further explanation may be performed based on the above embodiments.

[0024] For example, the mounting base 89 is a boss structure (such as a convex plate), and the bottom of the connecting plate 90 is provided with a concave step, which is located on the outside of the connecting plate 90, and the concave step is matched and mounted on the boss structure of the mounting base 89. The structural strength of the mounting base 89 and the connecting plate 90 is relatively good, and the mounting base 89 and the connecting plate 90 are relatively convenient to assemble. Moreover, on this basis, upper and lower fasteners and left and right fasteners can be connected between the connecting plate 90 and the mounting base 89, and the connection is more stable. During the flipping and lifting process of the lower mold base 85, the relative position of the lower mold base 85 when the mold is closed is more stable. Vertical holes 96 (for upper and lower fasteners) and transverse holes 97 (for left and right fasteners) can be provided for fastener installation and connection.

[0025] Among them, the installation shaft 99 of the guide wheel 91 is set on the connecting plate 90 and can be further optimized. A avoidance recess 98 is provided on the inner side of the connecting plate 90, and the installation shaft 99 is connected to the avoidance recess 98. The guide wheel 91 is set at the outer end of the installation shaft 99, and a fastening nut is set at the inner end of the installation shaft 99. The fastening nut cooperates to lock the installation shaft 99 on the connecting plate 90. The fastening nut is located in the avoidance recess 98. The fastening nut does not occupy the space outside the connecting plate 90, does not occupy excess space, is more compact and practical, and the avoidance recess 98 has an opening facing upward and inward relative to the upper mold base, which is convenient for reaching into the avoidance groove to loosen and disassemble the fastening nut. The structure is relatively compact and convenient for loosening and disassembly, and it can still be reached in for operation after the inner side of the connecting plate 90 is occupied.

[0026] For example, a first guide block 101 and a second guide block 102 are arranged inside the molded body 42, and the vertical guide groove is arranged between the first guide block 101 and the second guide block 102, and the structural strength is relatively good. The first guide block 101 and the second guide block 102 can also be replaced and disassembled for maintenance, and there is no need to process the vertical guide groove on the molded body 42, which has low requirements for the molded body 42 and is not easy to affect the molded body 42. It can also be optimized that the first guide block 101 and the second guide block 102 are provided with an introduction surface at the input end (i.e., the lower end) of the vertical guide groove (the introduction surface can be set as an introduction inclined surface or an introduction curved surface, which is convenient for setting and also convenient for introduction), which is used to cooperate with the guide wheel 91 to smoothly and smoothly enter the vertical guide groove to limit.

[0027] In addition, a support plate 104 is connected to the inner side of the molded fuselage 42, the first guide block 101 and the second guide block 102 are located on the support plate 104, and the support plate 104 is installed on the molded fuselage 42, and the support plate 104 is used as an installation transition connection. The support plate 104 can have higher material and processing accuracy, and is also convenient for disassembly, maintenance and replacement. The first guide block 101 and the second guide block 102 are connected to the support plate 104, and the support plate 104 is connected to the inner side of the molded fuselage 42, and both can be connected by fasteners. The inner side of the support plate 104 can be additionally retracted to form an inner concave plane, and the first guide and second guide blocks 102 can be located in the inner concave plane.

Claims

1. A mold clamping guide device for a plastic product molding machine, wherein a lower mold base (85) is connected to lift slides (86) on both sides via a rotating shaft (84), and the lift slides (86) are arranged on vertical slide rails (87) of a molding machine body (42), characterized in that: The lower die base (85) is provided with a mounting base (89), which is arranged on the right side of the lower die base (85). The mounting base (89) is equipped with a connecting plate (90), and the connecting plate (90) is provided with a guide wheel (91). A vertical guide groove is provided on the inner side of the forming body (42) for the guide wheel (91) to ascend and guide into. The lower mold (93) mounted on the lower mold base (85) also has a mold-closing auxiliary guide hole (94). The mold-closing auxiliary guide hole (94) is located on the left and right sides of the lower mold (93). The mounting base (89), the connecting plate (90) and the guide wheel (91) are located outside the mold-closing auxiliary guide hole (94). The upper forming die (106) mounted on the upper die base (2) is also provided with a die-closing auxiliary guide pin (95), which is located on the left and right sides of the upper forming die (106), and the die-closing auxiliary guide pin (95) corresponds to the die-closing auxiliary guide hole (94).

2. The mold clamping guide device of a plastic product molding machine according to claim 1, characterized in that: The mounting base (89) is a boss structure, and a concave step is provided at the bottom of the connecting plate (90), and the concave step is located on the outside of the connecting plate (90). The concave step is matched and mounted on the boss structure of the mounting base (89), and upper and lower connecting fasteners and left and right connecting fasteners are also connected between the connecting plate (90) and the mounting base (89).

3. The mold clamping guide device of a plastic product molding machine according to claim 1, wherein: A position-avoiding recessed platform (98) is provided on the inner side of the connecting plate (90), a mounting shaft (99) of the guide wheel (91) is provided on the connecting plate (90), the mounting shaft (99) is connected to the position-avoiding recessed platform (98), the guide wheel (91) is provided at the outer end of the mounting shaft (99), a fastening nut is provided at the inner end of the mounting shaft (99), the fastening nut is located in the position-avoiding recessed platform (98), and the position-avoiding recessed platform (98) has an opening facing upward and inward relative to the upper die seat.

4. The mold clamping guide device of a plastic product molding machine according to claim 1, wherein: A first guide block (101) and a second guide block (102) are provided on the inner side of the formed body (42), and a vertical guide groove is provided between the first guide block (101) and the second guide block (102).

5. The mold clamping guide device of a plastic product molding machine according to claim 4, characterized in that: The first guide block (101) and the second guide block (102) are provided with an introduction surface at the input end of the vertical guide groove.

6. The mold clamping guide device of a plastic product molding machine according to claim 5, characterized in that: Import Face is set to Import Slant or Import Surface.

7. The mold clamping guide device of a plastic product molding machine according to claim 4, characterized in that: A support plate (104) is connected to the inner side of the formed body (42), and the first guide block (101) and the second guide block (102) are located on the support plate (104).

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