Mechanical mold with anti-loosening function

Abstract

The utility model discloses a mechanical die with an anti-loosening function, which belongs to the field of dies and comprises an upper die holder and a lower die holder matched with the upper die holder, a lifting rod is vertically mounted in the middle of the upper surface of the upper die holder, and a flange ring is sleeved on the outer side of the output end of the lifting rod. An air bag of an annular structure is arranged on the lower surface of the flange ring, an inflation mechanism is arranged on the upper surface of the air bag, bayonets are distributed on the outer side of the flange ring in a circumferential array mode, a pushing mechanism is arranged outside the lower die base, a plurality of tensioning bolts are distributed on the outer side of the lower die base in a circumferential array mode, and the outer sides of the tensioning bolts are all connected to the pushing mechanism. The pushing mechanism comprises an electric push rod arranged outside the lower die base in the vertical direction, the electric push rod is staggered with a tensioning bolt in the vertical direction, a die can be extruded downwards in an annular face mode, pressing is conducted, extrusion dead angles are reduced, and the anti-loosening performance is good when a mechanical die is pressed.

Description

Technical Field

[0001] The utility model relates to the field of molds, and more specifically, to a mechanical mold with an anti-loosening function. Background Art

[0002] Mold machinery is a tool used to shape objects. This tool is composed of various parts. Different molds are composed of different parts. It is often used in the compression molding or injection molding of engineering plastics, rubber, ceramics and other products. Especially during injection molding, the pressure inside the mold cavity is increased, making the mold easy to loosen and need to be reinforced;

[0003] Through patent search, it is found that the Chinese patent with publication number CN218227602U discloses an anti-loosening fixing structure for injection molds, including an extrusion block, a fixed mold is arranged on the inner side of the extrusion block, and an electric push rod is fixedly connected to the lower end of the extrusion block; a plurality of elastic metal sheets are arranged, and the lower end of the elastic metal sheets is fixedly connected to the outer wall of the fixed mold through a fixed plate, and the upper end of the elastic metal sheets is fixedly connected to a limiting block; a plurality of rotating rollers are arranged, and a movable mold is arranged on the inner side of the plurality of rotating rollers, and the outer wall of the rotating roller is clamped with the outer wall of the limiting block, and although the movable mold is driven to move downward at the upper end of the fixed mold by a hydraulic cylinder, the limiting block squeezes the elastic metal sheet and passes over the rotating roller and is clamped with it, and at the same time, the elastic metal sheet passes through two connecting rods, so as to fix the movable mold at the upper end of the fixed mold;

[0004] However, when the injection mold of the above patent is injected, the hydraulic cylinder drives the movable mold to press the connecting rod downward, so that the connecting rod squeezes the injection mold downward. However, the pressing surface of the connecting rod is small, which easily produces a dead angle, resulting in the problem of loosening of the mold at the dead angle. For this reason, we propose a mechanical mold with an anti-loosening function. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a mechanical mold with an anti-loosening function, which can be realized by extruding the mold downward in an annular surface to reduce the extrusion dead angle, and the mechanical mold has good anti-loosening performance when it is compressed.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A mechanical mold with an anti-loosening function comprises an upper mold base and a lower mold base adapted to the upper mold base, a lifting rod is vertically installed in the middle of the upper surface of the upper mold base, a flange ring is sleeved on the outer side of the output end of the lifting rod, an air bag with a ring-shaped structure is arranged on the lower surface of the flange ring, an inflation mechanism is arranged on the upper surface of the air bag, bayonet holes are distributed along a circumferential array on the outer side of the flange ring, a pushing mechanism is arranged on the outside of the lower mold base, a plurality of tension bolts are distributed along a circumferential array on the outer side of the lower mold base, and the outer sides of the tension bolts are all connected to the pushing mechanism.

[0010] Furthermore, the pushing mechanism includes an electric push rod arranged outside the lower mold base in the vertical direction, the electric push rod is staggered from the tension bolt in the vertical direction, and a synchronization ring penetrating the outside of the tension bolt is fixedly installed on the output end of the electric push rod.

[0011] Furthermore, a long hole is opened on the outer side of the tension bolt in the horizontal direction, and the width of the long hole is greater than the diameter of the synchronization ring.

[0012] Furthermore, the inflation mechanism includes an air intake pipe that passes through and is fixedly mounted on the upper surface of the airbag, and one end of the air intake pipe passes through the flange ring upward and is fixedly mounted with an air pump.

[0013] Furthermore, the air inlet end of the air pump is equipped with an electric valve, and the electric valve is staggered at the bayonet.

[0014] Furthermore, the height of the long hole is smaller than the height of the flange ring, and a gap is left between the air inlet pipe and the bayonet.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This scheme first combines the upper mold base and the lower mold base into a mechanical mold. When making plastic parts, injection is performed into the mold along the injection tube, and the pushing mechanism is started to push the multiple tension bolts upward to close until the upper ends of the tension bolts are immersed in the vertically opposite bayonet. Then the inflation mechanism is started, and the airbag expands after inflation, lifting the flange ring. The upper surface of the flange ring presses against the screw heads of the multiple tension bolts, so that the airbag squeezes the mold downward, and can squeeze the mold downward in a ring shape to perform compression, reduce the extrusion dead angle, and have good anti-loosening performance when the mechanical mold is compressed.

[0018] (2) When pushing the tension bolt, the output end of the electric push rod is controlled to extend, driving the synchronizer ring to rise in the vertical direction. The synchronizer ring pushes the tension bolt to swing upward around the hinge point between the tension bolt and the lower die base, so that the tension bolt enters the bayonet. Conversely, the output end of the electric push rod is controlled to shorten, driving the synchronizer ring to descend. The synchronizer ring pulls multiple tension bolts to spread outward and disengage from the bayonet, without the need for manual adjustment of the tension bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the main view of the utility model;

[0020] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0023] Description of the numbers in the figure:

[0024] 1. Upper die base; 2. Lower die base; 3. Lifting rod; 4. Flange ring; 5. Airbag; 6. Bayonet; 7. Tension bolt; 8. Electric push rod; 9. Synchronous ring; 10. Long hole; 11. Intake pipe; 12. Air pump; 13. Electric valve. DETAILED DESCRIPTION

[0025] 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 utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] Example:

[0027] See also Figure 1-4A mechanical mold with an anti-loosening function comprises an upper mold base 1 and a lower mold base 2 adapted to the upper mold base 1. A lifting rod 3 is vertically installed in the middle of the upper surface of the upper mold base 1 by bolts. An injection tube is also inserted on the upper surface of the upper mold base 1. This technical solution is a prior art and is not shown in the figure. A flange ring 4 is sleeved on the outer side of the output end of the lifting rod 3. An air bag 5 with a ring-shaped structure is arranged on the lower surface of the flange ring 4. An inflation mechanism is arranged on the upper surface of the air bag 5. A bayonet 6 is distributed along the circumferential array on the outer side of the flange ring 4. The diameter of the flange ring 4 is greater than the width of the upper mold base 1, so that the bayonet 6 can stagger the upper mold base 1 and the lower mold base 2. A pushing mechanism is arranged on the outer side of the lower mold base 2. There are multiple tension bolts 7 distributed in a row, and the lower ends of the tension bolts 7 are radially hinged to the outer side of the lower mold base 2 through a hinge seat, and the outer sides of the tension bolts 7 are connected to the pushing mechanism. The upper mold base 1 and the lower mold base 2 are first molded into a mechanical mold. When making plastic parts, injection molding is performed into the mold along the injection tube, and the pushing mechanism is started to push the multiple tension bolts 7 upward to close until the upper ends of the tension bolts 7 are immersed in the vertically opposite bayonet 6, and then the inflation mechanism is started. The airbag 5 expands after inflation and lifts the flange ring 4. The upper surface of the flange ring 4 presses against the screw heads of multiple tension bolts 7, so that the airbag 5 squeezes the mold downward, and can squeeze the mold downward in an annular surface to perform compression, thereby reducing extrusion dead angles, and the mechanical mold has good anti-loosening performance when compressed.

[0028] See also Figure 2 and Figure 3 The pushing mechanism includes an electric push rod 8 arranged outside the lower die base 2 through a horizontal plate in the vertical direction. The electric push rod 8 is controlled by a controller. This technical solution is a prior art and is not shown in the figure. One end of the horizontal plate is fixedly connected to the outside of the lower die base 2 by bolts, and the other end of the horizontal plate is fixedly connected to the lower end of the electric push rod 8 by bolts. The electric push rod 8 is staggered from the tension bolt 7 in the vertical direction. The output end of the electric push rod 8 is fixedly installed with a synchronous ring 9 that passes through the outside of the tension bolt 7 by glue. The synchronous ring 9 is vertically staggered from the tension bolt 7 by a horizontal plate. The lower end of the tensioning bolt 7 is staggered to avoid driving the tensioning bolt 7 to reach a vertical state. When pushing the tensioning bolt 7, the output end of the electric push rod 8 is controlled to extend to drive the synchronizer ring 9 to rise in the vertical direction. The synchronizer ring 9 pushes the tensioning bolt 7 to swing upward around the hinge point between it and the lower die base 2 to make the tensioning bolt 7 enter the bayonet 6. Conversely, the output end of the electric push rod 8 is controlled to shorten to drive the synchronizer ring 9 to descend. The synchronizer ring 9 pulls multiple tensioning bolts 7 to spread outward and disengage from the bayonet 6, without the need for manual adjustment of the tensioning bolt 7.

[0029] See also Figure 1 and Figure 3A long hole 10 is opened in the horizontal direction on the outer side of the tension bolt 7. The width of the long hole 10 is greater than the diameter of the synchronizer ring 9, leaving enough space for the synchronizer ring 9 to slide. The height of the long hole 10 is less than the height of the flange ring 4, which is convenient for the connection between the tension bolt 7 and the flange ring 4 to maintain a large thickness. When the synchronizer ring 9 is pushed, it rises and falls in the vertical direction and slides in the long hole 10 to drive the tension bolt 7 to swing.

[0030] See also Figure 1 and Figure 4 The inflation mechanism includes an air intake pipe 11 that passes through and is fixedly installed on the upper surface of the airbag 5. A gap is left between the air intake pipe 11 and the bayonet 6. One end of the air intake pipe 11 passes upward through the flange ring 4 and is fixedly installed with an air pump 12. Start the air pump 12 to suck in external air and input it into the airbag 5 along the air intake pipe 11, so that the airbag 5 can be expanded to squeeze the mold. Conversely, the air pump 12 is controlled to sleep, and the air pressure in the airbag 5 is greater than the ambient pressure. The air can be discharged along the air intake pipe 11 to shrink.

[0031] See also Figure 1 The air inlet end of the air pump 12 is equipped with an electric valve 13, which is staggered from the bayonet 6 to avoid hindering the tightening bolt 7 from entering the bayonet 6. After the air pump 12 has worked for a certain period of time, the airbag 5 expands to a certain extent. By closing the electric valve 13 and controlling the air pump 12 to sleep, the airbag 5 can continue to squeeze the mold. When demolding, the electric valve 13 can be controlled to open, and air can circulate in the air inlet pipe 11, so that the airbag 5 can exhaust air and shrink.

[0032] Working principle: first, the upper mold base 1 and the lower mold base 2 are molded into a mechanical mold. When making plastic parts, injection is performed into the mold along the injection tube, and the pushing mechanism is started. By controlling the extension of the output end of the electric push rod 8, the synchronous ring 9 is driven to rise in the vertical direction. The synchronous ring 9 pushes the tensioning bolt 7 to swing upward around the hinge point between it and the lower mold base 2, and pushes multiple tensioning bolts 7 upward to close until the upper end of the tensioning bolt 7 is immersed in the vertically opposite bayonet 6, and then the inflation mechanism is started. The airbag 5 expands after inflation, and lifts the flange ring 4. The upper surface of the flange ring 4 presses against the screw heads of multiple tensioning bolts 7, so that the airbag 5 squeezes the mold downward, and can squeeze the mold downward in an annular surface to perform compression, reduce extrusion dead angles, and have good anti-loosening performance when the mechanical mold is compressed.

[0033] On the contrary, the output end of the electric push rod 8 is controlled to shorten, driving the synchronizer ring 9 to descend, and the synchronizer ring 9 pulls the plurality of tension bolts 7 to spread outward and disengage from the bayonet 6, without the need for manual adjustment of the tension bolts 7.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and improved concept of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A mechanical mold with an anti-loosening function, comprising an upper mold base (1) and a lower mold base (2) adapted to the upper mold base (1), characterized in that: A lifting rod (3) is vertically installed in the middle of the upper surface of the upper mold base (1), and a flange ring (4) is sleeved on the outer side of the output end of the lifting rod (3). An air bag (5) with a ring-shaped structure is arranged on the lower surface of the flange ring (4), and an inflation mechanism is arranged on the upper surface of the air bag (5). A bayonet (6) is distributed along a circumferential array on the outer side of the flange ring (4). A pushing mechanism is arranged on the outside of the lower mold base (2), and a plurality of tension bolts (7) are distributed along a circumferential array on the outer side of the lower mold base (2), and the outer sides of the tension bolts (7) are all connected to the pushing mechanism.

2. The mechanical mold with anti-loosening function according to claim 1, characterized in that: The pushing mechanism comprises an electric push rod (8) arranged outside the lower die base (2) in the vertical direction, the electric push rod (8) is staggered from the tension bolt (7) in the vertical direction, and a synchronization ring (9) penetrating the outside of the tension bolt (7) is fixedly installed at the output end of the electric push rod (8).

3. The mechanical mold with anti-loosening function according to claim 2, characterized in that: A long hole (10) is provided on the outer side of the tension bolt (7) in the horizontal direction, and the width of the long hole (10) is greater than the diameter of the synchronization ring (9).

4. The mechanical mold with anti-loosening function according to claim 3, characterized in that: The inflation mechanism comprises an air intake pipe (11) which penetrates and is fixedly mounted on the upper surface of the air bag (5); one end of the air intake pipe (11) penetrates upward through the flange ring (4) and is fixedly mounted with an air pump (12).

5. The mechanical mold with anti-loosening function according to claim 4, characterized in that: The air inlet end of the air pump (12) is equipped with an electric valve (13), and the electric valve (13) is staggered with the bayonet (6).

6. The mechanical mold with anti-loosening function according to claim 4, characterized in that: The height of the long hole (10) is smaller than the height of the flange ring (4), and a gap is left between the air inlet pipe (11) and the bayonet (6).

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