CN209534081U - A vertical injection molding equipment with a safety device - Google Patents

Abstract

The utility model discloses a vertical injection molding equipment with a safety device, which solves the problem of a large potential safety hazard after the mold clamping device opens the mold. The push rod of the clamping cylinder is fixed on the upper surface of the bottom plate; the lower surface of the fixed formwork is vertically fixed with a mechanical bumper, and the mechanical bumper slides through the surface of the bottom plate; the outer wall of the mechanical bumper is spaced apart along its length There are several limit slots. The utility model is a vertical injection molding equipment with a safety device. When the power source drives the safety block into the limit slot, the relative position between the mechanical safety bar and the bottom plate can be locked. As a result, the fixed template and the movable template cannot be closed, ensuring safety; on the contrary, when the power source drives the safety stopper to break away from the limit groove, the relative position between the mechanical safety lever and the bottom plate can be unlocked, so that the fixed template and the movable template can be locked. The moving template can close the mold.

Description

A vertical injection molding equipment with a safety device

technical field

The utility model relates to an injection molding equipment, in particular to a vertical injection molding equipment with a safety device.

Background technique

At present, the clamping device of a vertical injection molding machine or a vertical injection blowing machine mainly includes a fixed mold plate, a movable platen, a bottom plate, a tie rod and a clamping cylinder. The fixed formwork is located between the movable formwork and the bottom plate, and the four tie rods are respectively fixed between the movable formwork and the bottom plate through nuts, and pass through the fixed formwork. The clamping oil cylinder is fixed on the fixed template, and its push rod is connected with the bottom plate through the flange. When oil enters the rodless cavity of the clamping cylinder, the bottom plate moves downward, and the movable platen follows the downward movement, that is, the mold clamping action; on the contrary, when the oil rod cavity of the clamping cylinder enters oil, the bottom plate moves upward, and the movable platen follows the upward movement. , that is, the mold opening action.

For the mold clamping device of the existing vertical injection molding machine or vertical injection blowing machine, when the equipment is in the mold-opening state to replace the oil pipe or the oil circuit is overhauled, or the oil pipe bursts when the equipment is shut down for inspection, the equipment may be directly clamped. Cause safety accidents, so there is still room for improvement.

Utility model content

The purpose of this utility model is to provide a vertical injection molding equipment with a safety device to prevent personal injury caused by incorrect mold clamping.

The above-mentioned technical purpose of the utility model is achieved through the following technical solutions:

A vertical injection molding equipment with a safety device, including a mold clamping device, the mold clamping device includes a movable template, a fixed template and a bottom plate arranged in sequence from top to bottom, and a plurality of tie rods are slid on the fixed template, The two ends of the pull rod are respectively fixed between the movable template and the bottom plate; the lower surface of the fixed template is fixed with a clamping oil cylinder, and the push rod of the clamping cylinder is fixed on the upper surface of the bottom plate; the fixed template A mechanical bumper is vertically fixed on the lower surface of the bottom plate, and the mechanical bumper slides through the bottom plate; the outer wall of the mechanical bumper is provided with a number of limiting slots at intervals along its length direction; the upper surface of the bottom plate The board surface is provided with a safety stopper, and the upper board surface of the bottom plate is also equipped with a device for driving the safety stopper into the limit slot to lock the relative position between the mechanical safety bar and the bottom plate or to drive the safety stopper out of the limit slot to unlock the mechanical lock. The power source for the relative position between the bumper and the base plate.

With the above scheme, when the push rod of the clamping cylinder drives the bottom plate to move downward, the movable platen moves downward to get close to the upper surface of the fixed plate, that is, the mold clamping action; on the contrary, when the push rod of the clamping cylinder drives the bottom plate Moving upward, the movable template moves upwards to keep away from the upper surface of the fixed template, that is, the mold opening action; the pull rod can ensure the stable and synchronous lifting of the movable template and the bottom plate; when the power source drives the safety stopper into the limit slot, The relative position between the mechanical safety bar and the bottom plate can be locked, so that the fixed platen and the movable platen cannot be closed, ensuring safety; on the contrary, when the power source drives the safety stopper out of the limit slot, the mechanical safety bar and the movable platen The relative position between the bottom plates can be unlocked, so that the fixed formwork and the movable formwork can be clamped; in addition, the mechanical safety device is set reasonably, and will not affect production, mold installation and maintenance.

As a preference, the upper surface of the bottom plate is fixed with guide pressure blocks on both sides of the mechanical safety lever, and the two opposite sides of the two guide pressure blocks are aligned along the direction in which the safety stoppers are snapped into the limit grooves. Guide slots are provided, and guide sliders are fixed on both sides of the safety block to slide and engage in the two guide slots respectively.

With the above scheme, the sliding cooperation between the guide slider and the guide groove can make the safety block stably snap into the limit groove, and the guide pressure block can limit the safety stop to the upper surface of the bottom plate, so that the safety stop The block cannot be separated from the bottom plate, thereby playing the role of locking the mechanical safety lever.

Preferably, the guide slider is elongated and arranged along the length direction of the guide groove, and the end of the guide slider near the mechanical safety lever exceeds the safety stopper.

By adopting the above scheme, the elongated guide slider can increase the stability of the safety stop when sliding, and at the same time, the protruding parts of the two guide sliders can form grooves with the safety stop, so that the safety stop can be clamped on the safety stop. When in the limit slot, the shaft of the mechanical safety lever can be wrapped to increase the accuracy and smoothness of the clamping process, as well as the stability of the safety stopper after the clamping is completed.

Preferably, the upper side of the limiting groove is inclined upwards, the lower side of the limiting groove is horizontal; the upper side of the safety block is an inclined surface adapted to the upper side of the limiting groove.

With the above scheme, the limit groove has a one-way limit effect on the safety stop along the length direction of the mechanical bumper; when the bottom plate moves downward, the guide pressure block installed on the bottom plate also moves downward, and the guide pressure The block presses the safety block that advances forward, so that the safety block just blocks the horizontal lower side of the limit groove of the mechanical safety rod, so that the mold clamping device cannot close the mold, but it does not affect the mold opening action.

Preferably, the power source is a spring-extruded automatic reset cylinder, and the push rod of the cylinder is connected to the side of the safety stop away from the mechanical safety lever.

With the above scheme, the power source has an automatic reset function. When the cylinder is in a power-off state, its push rod can automatically pop out under the elastic force of the internal spring to push the safety stopper into the limit slot, thereby locking the mechanical safety. The pole prevents the power source from losing its protective effect due to power failure, further improving safety.

Preferably, a joint bearing is connected between the safety block and the push rod of the cylinder.

By adopting the above scheme, the joint bearing can reduce the connection accuracy between the cylinder push rod and the safety stopper, thereby reducing the installation difficulty of the safety stopper and improving the installation efficiency.

As a preference, a movable mounting frame is fixed on the side of the housing of the cylinder away from the mechanical bumper, and a fixed mounting frame located at the rear of the cylinder is fixed on the upper surface of the bottom plate, between the movable mounting frame and the fixed mounting frame A hinge is connected, and the rotation plane of the hinge is perpendicular to the board surface of the bottom plate.

By adopting the above solution, the tail end of the cylinder can be pivotally connected to the upper surface of the bottom plate, thereby increasing the flexibility of the cylinder when pushing the safety stopper, further reducing the installation difficulty of the cylinder, and improving the installation efficiency.

To sum up, the utility model has the following beneficial effects: when the push rod of the clamping cylinder drives the bottom plate to move downward, the movable platen moves downward accordingly to approach the upper plate surface of the fixed platen, that is, the mold clamping action; on the contrary, When the push rod of the clamping cylinder drives the bottom plate to move upward, the movable platen moves upward accordingly to keep away from the upper surface of the fixed platen, that is, the mold opening action; the pull rod can ensure the stable and synchronous lifting of the movable platen and the bottom plate; when the power source drives the safety When the stopper snaps into the limit slot, the relative position between the mechanical safety lever and the bottom plate can be locked, so that the fixed platen and the movable platen cannot be closed, ensuring safety; otherwise, when the power source drives the safety stopper to disengage When the limit groove is used, the relative position between the mechanical safety lever and the bottom plate can be unlocked, so that the fixed platen and the movable platen can be clamped; in addition, the mechanical safety device is set reasonably and will not affect production, mold installation and maintenance.

Description of drawings

Fig. 1 is the structural representation of clamping device in the present embodiment;

Figure 2 is an enlarged schematic view of part A shown in Figure 1;

Fig. 3 is a schematic diagram of the structure between the safety stopper and the mechanical safety lever in this embodiment;

Fig. 4 is the second structural diagram between the safety stopper and the mechanical safety lever in this embodiment;

Fig. 5 is the sectional view of power source in the present embodiment;

FIG. 6 is a system architecture diagram of this embodiment.

In the figure: 1. Clamping device; 2. Moving template; 3. Fixed template; 4. Bottom plate; 5. Tie rod; 6. Clamping cylinder; 7. Mechanical bumper; ;10, power source; 11, guide briquetting block; 12, guide groove; 13, guide slider; 14, inclined surface; 15, joint bearing; 16, movable mounting frame; 17, fixed mounting frame; 18, hinge; 19 , lock nut; 20, connecting flange; 21, air source; 22, controller; 23, air valve; 24, alarm device; 25, magnetic switch; 26, pneumatic cylinder; 27, piston; 28, sensing point.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A vertical injection molding equipment with a safety device disclosed in this embodiment, as shown in Figure 1, includes a mold clamping device 1, and the mold clamping device 1 includes a movable platen 2, a fixed platen 3 and a bottom plate 4 arranged in sequence from top to bottom A plurality of tie rods 5 are provided for sliding on the fixed formwork 3, and there are preferably four tie rods 5, which are respectively located at the four corners of the fixed formwork 3. Both ends of the pull rod 5 are respectively fixed between the movable formwork 2 and the bottom plate 4, and are preferably fixed by locknuts 19, which belong to the common knowledge in the art and will not be repeated here. More specifically, a clamping cylinder 6 is fixed on the lower surface of the fixed template 3, and the clamping cylinder 6 is located in the space formed by four tie rods 5. The tail end of the clamping cylinder 6 can be bolted, welded, etc. Fixing with the lower plate surface of the fixed formwork 3 belongs to the prior art and will not be repeated here. The push rod of the clamping cylinder 6 is fixed on the upper surface of the bottom plate 4 through the connecting flange 20, wherein the push rod of the clamping cylinder 6 is fixed on the center of the connecting flange 20 by welding, and the connecting flange 20 is fixed on the bottom plate by screws 4 on the upper surface of the board.

Further, as shown in Figures 2 and 3, a mechanical bumper 7 is vertically fixed on the lower surface of the fixed formwork 3, the lower end of the mechanical bumper 7 slides through the surface of the bottom plate 4, and its upper end is fixed by a nut The plate surface of the fixed formwork 3 neither affects the mold installation nor the operator's trial mold, and does not affect the production and use while reducing safety hazards; the outer wall of the mechanical bumper 7 is provided with a number of limiting grooves at intervals along its length direction 8. Several limiting slots 8 are arranged at equal intervals on the mechanical bumper 7 . The upper surface of the bottom plate 4 is also provided with a safety stop 9, and the upper surface of the bottom plate 4 is also installed with a safety stop 9 for driving to snap into the limit groove 8 to lock the relative position between the mechanical safety lever 7 and the bottom plate 4 or to drive the safety. The stopper 9 disengages from the limiting slot 8 to unlock the power source 10 at the relative position between the mechanical safety lever 7 and the bottom plate 4 . The power source 10 is a spring extruded type automatic reset type cylinder, and the push rod of the cylinder is connected to the side of the safety stopper 9 away from the mechanical safety lever 7 . A joint bearing 15 is connected between the safety stopper 9 and the push rod of the cylinder. The joint bearing 15 is preferably a rod end joint bearing 15, and its rod end is fixed on the push rod of the cylinder. The bearing part and the safety stopper 9 are far away from the mechanical insurance. The side pivot connection of the rod 7, and the specific fixing and pivot connection structures belong to common knowledge in the field, and will not be repeated here.

Furthermore, as shown in Figure 4, the upper side of the limiting groove 8 is inclined upward, and the lower side of the limiting groove 8 is horizontal; Inclined surface 14.

Furthermore, as shown in Figure 4, a movable mounting frame 16 is fixed on the side of the housing of the cylinder away from the mechanical bumper 7, and the movable mounting frame 16 is attached to the bottom of the housing of the cylinder, which can be screwed or welded. The way is fixed with the housing of the cylinder. The upper surface of the base plate 4 is fixed with a fixed mounting frame 17 positioned at the cylinder rear, and the fixed mounting frame 17 is attached to the upper surface of the base plate 4, and it can be fixed with the upper surface of the base plate 4 by means of screws or welding. A hinge 18 is connected between the movable mounting frame 16 and the fixed mounting frame 17. The rotation plane of the hinge 18 is perpendicular to the surface of the base plate 4. Two movable ends of the hinge 18 are respectively fixed on the movable mounting frame 16 and the fixed mounting frame 17.

Furthermore, as shown in Figure 4, the upper surface of the base plate 4 is fixed with guide pressing blocks 11 at the positions on both sides of the mechanical bumper 7, and the guide block 11 is preferably in the shape of a strip, which is perpendicular to the mechanical bumper. 7 settings. On the two opposite side surfaces of the two guide pressure blocks 11, there are guide grooves 12 along the direction in which the safety block 9 snaps into the limit groove 8. The guide grooves 12 are elongated, and their two ends respectively pass through the guide grooves. The front and rear ends of the briquetting block 11. Both sides of the safety block 9 are fixed with guide sliders 13 that slide and engage in the two guide grooves 12 respectively. Guide slider 13 is elongated and is arranged along the length direction of guide groove 12, and the end of guide slider 13 near mechanical bumper 7 exceeds safety stopper 9, makes between guide slider 13 and safety stopper 9 A groove is formed, and the width of the groove is greater than or equal to the outer diameter of the mechanical safety rod 7 .

Now in conjunction with this embodiment, the working process of the above-mentioned vertical injection molding equipment with a safety device is described:

When the power source 10 (i.e. the cylinder) is running, the push rod shrinks to pull back the safety block 9 to release the lock between the mechanical safety rod 7 and the base plate 4; at this time, when the push rod of the clamping cylinder 6 drives the base plate 4 moves downward, and the movable template 2 moves downward accordingly to get close to the upper surface of the fixed template 3, that is, the mold clamping action; on the contrary, when the push rod of the clamping cylinder 6 drives the bottom plate 4 to move upward, the movable template 2 follows Move upwards to move away from the upper surface of the fixed template 3, that is, the mold opening action.

When the power source 10 (i.e. the cylinder) is not running, the push rod automatically stretches out to push the safety block 9 into the limit groove 8 of the mechanical safety rod 7; at this time, the mechanical safety rod 7 and the base plate 4 The relative position between is locked; at this time, thanks to the upper inclined side of the limit groove 8, the bottom plate 4 can move upward relative to the mechanical safety lever 7, that is, it does not affect the mold opening action; during this process, the safety stop 9 can overcome the thrust of the push rod of the power source 10 (i.e. the cylinder) and retreat under the pressure of the upper side of the limit groove 8. On the contrary, if the movable template 2 has a downward movement tendency, the bottom plate 4 also has the same movement tendency. At this time, because the guide block 11 presses the forward-propelled safety block 9, And the safety block 9 is just stuck on the horizontal lower side wall of the limit groove 8, so that the bottom plate 4 cannot move downward relative to the mechanical safety lever 7, and then the mold clamping operation cannot be realized, so as to play a protective role.

Furthermore, as shown in Figure 6, the vertical injection molding equipment with safety device also includes an air source 21 and a controller 22, the operating state of the power source 10 (i.e. cylinder) is controlled by the air source 21, and the circuit of the air source 21 is controlled As for the controller 22, the controller 22 is preferably a PLC. The input end of the controller 22 is coupled with an air valve 23 installed on the air source 21 and used to detect the pressure state of the air source 21, and the output end of the controller 22 is coupled with an alarm device 24, which is preferably an audible alarm. Such as horns, buzzers, speakers, etc.

When the air valve 23 detects that the pressure signal of the air source 21 is abnormal, the controller 22 can cut off the injection molding equipment to prevent the injection molding equipment from running under the premise that the power source 10 cannot provide protection measures, further improving safety, and at the same time the controller 22 controls Alarm device 24 gives an alarm to remind the staff.

Further, as shown in FIGS. 5 and 6 , the input end of the controller 22 is also coupled with a magnetic switch 25 , and the power source 10 (i.e., the cylinder) includes a pneumatic cylinder 26 and a push rod slidingly connected in the pneumatic cylinder 26 , the tail end of the push rod is provided with a piston 27, the magnetic switch 25 is arranged on the outer wall of the pneumatic cylinder 26, and is located near its tail end; at the same time, a sensing point 28 is embedded on the piston 27, and the sensing point 28 is preferably a magnetic piece , such as a permanent magnet. The mold clamping cylinder 6 is controlled by the controller 22, wherein the controller 22 controls the operation of the mold clamping cylinder 6, which needs to be combined with intermediate devices such as cylinder sensors and oil circuit solenoid valves, which belong to the prior art and will not be described here.

The piston 27 can push the push rod to perform reciprocating linear motion in the pneumatic cylinder 26; the sensing point 28 embedded in the piston 27 can move synchronously with the piston 27, and the magnetic switch 25 can monitor the position of the sensing point 28 to judge the operation of the push rod state, thereby judging whether the safety block 9 is engaged in the limiting groove 8 or not.

Since the magnetic switch 25 is located near the tail end of the pneumatic cylinder 26, when the push rod of the power source 10 (i.e., the cylinder) is in a retracted state, the sensing point 28 is close to the magnetic switch 25 with the piston 27, so that the magnetic switch 25 can detect the induction. The magnetic field at point 28 shows that the safety block 9 has broken away from the limit groove 8, and the locking between the mechanical safety lever 7 and the base plate 4 has been released. At this time, the controller 22 controls the clamping cylinder 6 to be operated, so that the movable template 2 and the The fixed template 3 can perform mold clamping action.

On the contrary, when the push rod of power source 10 (i.e. cylinder) was in extended state, sensing point 28 was away from magnetic switch 25 with piston 27, so that magnetic switch 25 could not detect the magnetic field of sensing point 28, illustrated that safety stopper 9 has snap into the limit groove 8; at this time, the controller 22 cuts off the clamping cylinder 6, so that the movable platen 2 and the fixed platen 3 cannot be clamped, thereby avoiding the damage of the mechanical bumper 7 and the bumper 9 due to mutual collision, further improving Equipment safety and service life.

The above-mentioned control process can be realized by an analog circuit or a built-in program of the controller 22, which belongs to the prior art and will not be repeated here.

This specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. After reading this description, those skilled in the art can make modifications to the embodiment without creative contribution according to needs, but as long as it is within the utility model All new claims are protected by patent law.

Claims (7)

1. a kind of vertical injection-moulding device with safety device, including mold closing mechanism (1), it is characterized in that: the mold closing mechanism (1) Including the moving template (2), solid plate (3) and bottom plate (4) from top to bottom set gradually, slides and wear on the solid plate (3) Have several pull rods (5), the both ends of the pull rod (5) are individually fixed between moving template (2) and bottom plate (4)；The solid plate (3) Lower face be fixed with Mode-locking oil cylinder (6), the push rod of the Mode-locking oil cylinder (6) is fixed on the upper face of bottom plate (4)；The cover half The lower face of plate (3) is vertically and fixedly provided with machine insurance bar (7), and machine insurance bar (7) sliding is arranged in the plate of bottom plate (4) Face；The outer wall of the machine insurance bar (7) is arranged at intervals with several limiting slots (8) along its length；The bottom plate (4) it is upper Plate face is provided with insurance block (9), and the upper face of the bottom plate (4) is also equipped with for driving insurance block (9) to be caught in limit Slot (8) with lock between machine insurance bar (7) and bottom plate (4) relative position or driving insurance block (9) be detached from limiting slot (8) with Unlock the power source (10) of relative position between machine insurance bar (7) and bottom plate (4).

2. a kind of vertical injection-moulding device with safety device according to claim 1, it is characterized in that: the bottom plate (4) Upper face and be respectively and fixedly provided with guiding briquetting (11) in (7) two side position of machine insurance bar, it is opposite on two guiding briquettings (11) Two sides and be caught in the direction of limiting slot (8) along insurance block (9) and offer guide groove (12), the insurance block (9) two sides are respectively and fixedly provided with the guide runner (13) that sliding is connected in two guide grooves (12) respectively.

3. a kind of vertical injection-moulding device with safety device according to claim 2, it is characterized in that: the guide runner (13) in long strip and be arranged along the length direction of guide groove (12), the guide runner (13) is close to machine insurance bar (7) End beyond insurance block (9).

4. a kind of vertical injection-moulding device with safety device according to claim 1, it is characterized in that: the limiting slot (8) upper side in being obliquely installed upwards, and the downside of the limiting slot (8) is in horizontally disposed；It is described to insure the upper of block (9) Side is the inclined surface (14) for being adapted to limiting slot (8) upper side.

5. a kind of vertical injection-moulding device with safety device according to any one of claims 1 to 4, it is characterized in that: institute Stating power source (10) is spring press out type Automatic-reset cylinder, and the push rod of the cylinder is connected to insurance block (9) far from machine The side of tool bumper bar (7).

6. a kind of vertical injection-moulding device with safety device according to claim 5, it is characterized in that: the insurance block (9) being connected between the push rod of cylinder has oscillating bearing (15).

7. a kind of vertical injection-moulding device with safety device according to claim 5, it is characterized in that: the shell of the cylinder Body is fixed with movable frame (16) far from the side of machine insurance bar (7), and the upper face of the bottom plate (4) is fixed with positioned at gas The fixing and mounting bracket (17) at cylinder rear, being connected between the movable frame (16) and fixing and mounting bracket (17) has hinge (18), Plate face of the rotational plane of the hinge (18) perpendicular to bottom plate (4).