A low-pressure injection molding machine locking mechanism anti-dropping mold structure

Abstract

The utility model relates to a kind of low-pressure injection molding machine locking mechanical anti-drop mould structure, the low-pressure injection molding machine locking mechanical includes locking plate, and the locking plate is connected with upper die plate;The low-pressure injection molding machine locking mechanical is with cylinder or gas-liquid booster cylinder as power source, the cylinder or gas-liquid booster cylinder connects locking plate, drives locking plate to move up and down, and the upper die plate moves up and down along with it;The anti-drop mould structure is a elastic structure, the elastic structure is connected with locking plate, and the elastic structure applies upward elastic pressure to locking plate.The design is reasonable, simple structure, and elastic structure applies upward elastic pressure to locking plate (transmitted to upper die plate by pull rod), effectively prevent drop mould from happening;When with gas-liquid booster cylinder as power source, gas-liquid booster cylinder is smaller, and elastic structure applies upward elastic pressure to locking plate (transmitted to upper die plate by pull rod), play the effect of force increase.

Description

Technical Field

[0001] This utility model relates to low-pressure injection molding machines, specifically to a mold-locking mechanism and anti-molding structure for low-pressure injection molding machines. Background Technology

[0002] Traditional low-pressure injection molding machines typically use cylinders or pneumatic-hydraulic booster cylinders for mold locking, but air valves are prone to leakage, and air pipes are also at risk of bursting. If these situations occur, the low-pressure injection molding machine will face the risk of mold drop, which in severe cases can even cause injury to personnel. Utility Model Content

[0003] In view of the above problems, this utility model proposes a mechanical anti-demolding structure for low-pressure injection molding machines.

[0004] The technical solution of this utility model: A mold-locking mechanism for a low-pressure injection molding machine to prevent mold drop is disclosed. The mold-locking mechanism includes a locking platen connected to an upper platen. The mold-locking mechanism is powered by a cylinder or a pneumatic-hydraulic booster cylinder, which is connected to the locking platen and drives it to move up and down, causing the upper platen to move up and down accordingly. The mold-locking structure is an elastic structure connected to the locking platen, and the elastic structure applies an upward elastic pressure to the locking platen.

[0005] Further refining the above technical solution, the locking template is located below the lower template and is connected to the upper template via several tie rods; a fixing plate is positioned below the lower template and above the locking template, and is connected to the lower template via several fixing rods; the elastic structure includes several springs, and several guide rods are installed on the locking template, each guide rod passing through the fixing plate and having a clearance fit with the fixing plate; each spring is installed on each guide rod; the spring is sleeved on the guide rod, with its lower end abutting against the fixing plate and its upper end abutting against a spring pressure plate installed on the upper end of the guide rod.

[0006] The above technical solution is further refined so that each tie rod passes through the lower template and the tie rod is fitted with the lower template with a clearance.

[0007] To further refine the above technical solution, the cylinder or gas-liquid booster cylinder is mounted on a fixed plate.

[0008] The advantages of this utility model are that it is reasonably designed and has a simple structure. The elastic structure applies upward elastic pressure to the locking template (transmitted to the upper template through the tie rod), which effectively prevents mold drop. When the gas-hydraulic booster cylinder is used as the power source, the opening of the mold by the gas-hydraulic booster cylinder is small, and the elastic structure applies upward elastic pressure to the locking template (transmitted to the upper template through the tie rod), which has the effect of increasing force. Attached Figure Description

[0009] Figure 1This is a schematic diagram of the mold-locking mechanical structure of a low-pressure injection molding machine with an anti-molding-drop structure.

[0010] The diagram shows: locking template 1, upper template, pneumatic-hydraulic booster cylinder 3, lower template 4, pull rod 5, fixing plate 6, fixing rod 7, anti-demolding structure 8, spring 8-1, guide rod 9, and spring pressure plate 10. Detailed Implementation

[0011] As shown in the figure, a low-pressure injection molding machine clamping mechanism with an anti-demolding structure is provided. The clamping mechanism includes a clamping platen 1, which is connected to an upper platen 2. The clamping mechanism uses a pneumatic-hydraulic booster cylinder 3 as a power source, which is connected to the clamping platen 1 and drives the clamping platen 1 to move up and down. The clamping platen 1 is located below the lower platen 4 and is connected to the upper platen 2 via several tie rods 5. A fixing plate 6 is located below the lower platen 4 and above the clamping platen 1, and is connected to the lower platen 4 via several fixing rods 7. Each tie rod 5 passes through the lower template 4, and each tie rod 5 is clearance-fitted with the lower template 4; the gas-liquid booster cylinder 3 is installed on the fixed plate 6; the anti-demolding structure 8 is an elastic structure, which includes several springs 8-1; several guide rods 9 are installed on the locking template 1, each guide rod 9 passes through the fixed plate 6, and each guide rod 9 is clearance-fitted with the fixed plate 6; each spring 8-1 is installed on each guide rod 9; the spring 8-1 is sleeved on the guide rod 9, with its lower end abutting against the fixed plate 6 and its upper end abutting against the spring pressure plate 10 installed on the upper end of the guide rod 9.

[0012] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A mold-locking mechanism for a low-pressure injection molding machine to prevent mold drop, wherein the mold-locking mechanism includes a locking platen connected to an upper platen; the mold-locking mechanism uses a cylinder or a pneumatic-hydraulic booster cylinder as a power source, the cylinder or pneumatic-hydraulic booster cylinder is connected to the locking platen and drives the locking platen to move up and down, and the upper platen moves up and down accordingly; characterized in that, The anti-demolding structure is an elastic structure, which is connected to the locking template and applies an upward elastic pressure to the locking template.

2. The mold-locking mechanical anti-dumping structure for a low-pressure injection molding machine according to claim 1, characterized in that, The locking template is located below the lower template and is connected to the upper template by several tie rods; a fixing plate is set below the lower template and above the locking template and is connected to the lower template by several fixing rods. The elastic structure includes several springs, and several guide rods are installed on the locking template. Each guide rod passes through the fixed plate and is clearance-fitted with the fixed plate. Each spring is installed on each guide rod. The spring is sleeved on the guide rod, with its lower end abutting against the fixed plate and its upper end abutting against the spring pressure plate installed on the upper end of the guide rod.

3. The anti-demolding mechanical clamping structure for a low-pressure injection molding machine according to claim 2, characterized in that, Each tie rod passes through the lower template, and each tie rod is fitted with the lower template with a clearance.

4. The anti-dumping mechanical mold-locking structure for a low-pressure injection molding machine according to claim 2, characterized in that, The cylinder or gas-liquid booster cylinder is mounted on the fixed plate.

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