CN220078596U - Accurate quantitative injection charging mechanism - Google Patents

Abstract

The utility model belongs to the technical field of filling equipment, and relates to an accurate quantitative injection charging mechanism, which comprises a fixed support, a fixed component arranged at the front part of the fixed support and a push rod component connected to the rear part of the fixed support, wherein the fixed component is used for positioning a filling needle tube for containing a material body, a piston is arranged in the filling needle tube, an outlet is downward, the push rod component comprises a servo motor, a screw rod driven by the servo motor, a movable plate driven by the screw rod to lift and a push rod connected with the movable plate and the piston, a check valve head for enabling the material body to only flow downwards is arranged at the outlet of the filling needle tube, the charging mechanism also comprises a plurality of guide rods for guiding the movable plate to lift, and guide holes for the guide rods to pass through are arranged on the movable plate. The injection charging mechanism not only precisely controls the charging quantity through the push rod driven by the screw rod, but also adopts the check valve head to prevent the material body from dripping under the influence of gravity when the charging is stopped, thereby improving the charging precision.

Description

Accurate quantitative injection charging mechanism

Technical Field

The utility model relates to the technical field of filling equipment, in particular to an accurate quantitative injection feeding mechanism.

Background

With the development of the medical and cosmetic industry, single general skin care products cannot meet the demands of people, and personalized and customized products are also trend-oriented. The prior art mostly relies on the manual work to carry out the ratio to the crowd of different demands, and modulation product is higher and configuration efficiency and precision are all nonideal to artificial professional requirement.

Chinese patent CN212196016U discloses a quantitative injection device capable of controlling the pushing distance of the piston rod by using a screw rod to quantitatively add the additive to the tube. However, if the feeding direction is downward, the fluidity of the material body is better, and when the piston rod is stopped, the material body can fall under the action of gravity, so that the feeding precision is affected.

There is therefore a need to design a charging mechanism to solve the above problems.

Disclosure of Invention

The utility model aims to provide an accurate quantitative injection charging mechanism, which can accurately control charging quantity, avoid material from dripping under the influence of gravity when charging is stopped, and improve charging precision.

The utility model realizes the aim through the following technical scheme: the utility model provides an accurate ration injection charging mechanism, includes the fixed bolster, locates the fixed subassembly of fixed bolster front portion with connect in the push rod subassembly at fixed bolster rear portion, fixed subassembly location holds the filling needle tubing of material body, the inside of filling needle tubing has piston and export downwards, the push rod subassembly includes servo motor, by servo motor driven lead screw, by the fly leaf of lead screw drive lift and connection the fly leaf with the push rod of piston, the export of filling needle tubing is equipped with the check valve head that makes the material body only can downwardly flow, charging mechanism still includes the guide a plurality of guide arms of fly leaf elevating movement, be equipped with on the fly leaf and supply the guide hole that the guide arm passed.

Specifically, the servo motor and the screw rod are driven by a plurality of reduction gears.

Specifically, the afterbody of filling needle tubing is equipped with the flange, fixed subassembly is including the cooperation flange structure's profile modeling inlays the seat and surrounds the centre gripping filling needle tubing outer wall's elasticity clamping piece.

Specifically, the upper portion of push rod has two blocking portions, be equipped with the bayonet socket of gomphosis between two blocking portions on the fly leaf.

Further, the lower part of push rod is equipped with spacing portion, spacing portion includes low level step and is higher than the stopper of low level step, low level step with the stopper is located the radial both sides of push rod, the stopper is fan-shaped, the upper portion of piston is equipped with a pair of sectorial trip portion, trip portion pushes down the low level step and with the lateral wall of stopper supports and leans on so that the push rod with the filling needle tubing is in coaxial relation.

The technical scheme has the beneficial effects that:

the injection charging mechanism not only precisely controls the charging quantity through the push rod driven by the screw rod, but also adopts the check valve head to prevent the material body from dripping under the influence of gravity when the charging is stopped, thereby improving the charging precision.

Drawings

FIG. 1 is a perspective view of an embodiment precision quantitative injection charging mechanism;

FIG. 2 is a diagram of the connection of the push rod, the filling needle tube and the movable plate;

fig. 3 is a perspective view of the push rod.

The figures represent the numbers:

1-fixing a bracket;

2-fixing components, 21-profiling embedding seats and 22-elastic clamping pieces;

3-push rod components, 31-servo motors, 32-screw rods, 33-movable plates, 331-bayonets, 332-guide holes, 34-push rods, 341-blocking parts, 342-limiting parts, 3421-low-level steps, 3422-limiting blocks and 35-reduction gears;

4-filling needle tube, 41-piston, 411-hook part, 42-outlet, 43-flange;

5-check valve head.

Detailed Description

As shown in fig. 1 and 2, the precise quantitative injection feeding mechanism of the utility model comprises a fixed support 1, a fixed component 2 arranged at the front part of the fixed support 1 and a push rod component 3 connected to the rear part of the fixed support 1, wherein the fixed component 2 positions a filling needle tube 4 for containing a material body, a piston 41 is arranged in the filling needle tube 4, an outlet 42 is downward, the push rod component 3 comprises a servo motor 31, a screw rod 32 driven by the servo motor 31, a movable plate 33 driven by the screw rod 32 to lift and a push rod 34 connected with the movable plate 33 and the piston 41, the outlet 42 of the filling needle tube 4 is provided with a check valve head 5 which enables the material body to flow downwards, the feeding mechanism also comprises a plurality of guide rods (not shown) for guiding the lifting movement of the movable plate 33, and a guide hole 332 for the guide rods to pass through is arranged on the movable plate 33.

Since the inside of the filling needle tube 4 is of a cylindrical structure, the feeding amount of the material body is in a linear relationship with the axial stroke of the push rod 34, and the stroke of the push rod 34, that is, the descending distance of the movable plate 33 is in a linear relationship with the driving rotation angle of the servo motor 31, so that the feeding amount of the material body can be controlled by controlling the rotation angle of the servo motor 31. The receiving bottle is firstly placed below the outlet 42, when the push rod 34 descends, the pressure of the space below the piston 41 rises, the material is extruded into the receiving bottle from the outlet 42, the check valve head 5 does not obstruct the downward flow of the material in the process, and when the push rod 34 stops, the check valve head 5 is quickly closed, the outlet 42 is sealed, and the feeding is stopped. The injection charging mechanism not only precisely controls the charging quantity through the push rod 34 driven by the screw rod 32, but also adopts the check valve head 5 to prevent the material from dripping under the influence of gravity when the charging is stopped, thereby improving the charging precision.

As shown in fig. 1, the servo motor 31 and the screw 32 are driven by a plurality of reduction gears 35.

The servo motor 31 generally has a high rotation speed, so that the rotation speed of the screw rod 32 needs to be reduced by the transmission of the reduction gear 35, so that the movable plate 33 is lowered at a lower speed, and the feeding amount can be controlled more accurately.

As shown in fig. 1 and 2, the rear of the filling needle tube 4 is provided with a flange 43, and the fixing assembly 2 comprises a profiled insert seat 21 cooperating with the structure of the flange 43 and a resilient clamping member 22 surrounding the outer wall of the clamping filling needle tube 4.

The profiling embedding seat 21 surrounds the rear part of the filling needle tube 4 from the rear part, and the elastic clamping piece 22 surrounds the front part of the filling needle tube 4, so that the filling needle tube 4 can keep unchanged with the position of the fixing assembly 2 under the condition of no external force when the profiling embedding seat 21 is attached. When the material is required to be replaced, a user pulls out the filling needle tube 4 outwards to enable the elastic clamping piece 22 to elastically deform, finally, the filling needle tube 4 is separated, a new filling needle tube 4 is embedded into the profiling embedding seat 21 from one side of the free end of the elastic clamping piece 22, the check valve head 5 is also detached from the outlet 42 of the old filling needle tube 4, and the new filling needle tube 4 is replaced to the outlet 42 of the new filling needle tube 4, so that the material replacement is completed.

As shown in fig. 1 to 3, the push rod 34 has two blocking portions 341 at an upper portion thereof, and the movable plate 33 is provided with a bayonet 331 fitted between the two blocking portions 341.

When the filling needle tube 4 is replaced, the movable plate 33 is lifted to the highest point, the push rod 34 is separated from the inner side of the filling needle tube 4, and the push rod 34 is disconnected from the connection relationship between the movable plate 33 and the piston 41. A section of detail is formed between the two blocking parts 341, and the detail is to be blocked into the bayonet 331 from the side, and the two blocking parts 341 form an axial blocking of the push rod 34 pushed and pulled by the movable plate 33.

As shown in fig. 1 to 3, a limiting part 341 is disposed at the lower part of the push rod 34, the limiting part 342 includes a low-level step 3421 and a limiting block 3422 higher than the low-level step 3421, the low-level step 3421 and the limiting block 3422 are located at two radial sides of the push rod 34, the limiting block 3422 is in a sector shape, a pair of sector-shaped hook parts 411 are disposed at the upper part of the piston 41, and the hook parts 411 press the low-level step 3421 downwards and abut against the side wall of the limiting block 3422 to make the push rod 34 and the filling needle tube 4 in a coaxial relation.

The connection of the push rod 34 and the piston 41 is completed by means of the cooperation of the hook 411 and the limit 341. On the one hand, the lower step 3421 is limited in the vertical direction by the clamping hook 411, and on the other hand, the push rod 34 and the filling needle tube 4 are axially limited by the matching of the clamping hook 411 and the limiting block 3422, so that the axial line of the push rod 34 is consistent with the axial line of the filling needle tube 4 during feeding, the moving distance of the push rod 34 and the feeding amount are ensured to be in a simple linear relation, and the feeding amount control is more accurate.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims (5)

1. An accurate ration injection charging mechanism which characterized in that: including the fixed bolster, locate the fixed subassembly in fixed bolster front portion with connect in the push rod subassembly at fixed bolster rear portion, fixed subassembly location holds the filling needle tubing of material body, the inside of filling needle tubing has piston and export downwards, the push rod subassembly include servo motor, by servo motor driven lead screw, by the fly leaf that the lead screw drive goes up and down and connect the fly leaf with the push rod of piston, the export of filling needle tubing is equipped with the check valve head that makes the material body only can flow downwards, feeding mechanism still includes the guide a plurality of guide arms of fly leaf elevating movement, be equipped with on the fly leaf and supply the guide hole that the guide arm passed.

2. The precision quantitative injection charging mechanism according to claim 1, wherein: the servo motor and the screw rod are driven by a plurality of reduction gears.

3. The precision quantitative injection charging mechanism according to claim 1, wherein: the tail of the filling needle tube is provided with a flange, and the fixing assembly comprises a profiling embedded seat matched with the flange structure and an elastic clamping piece surrounding and clamping the outer wall of the filling needle tube.

4. The precision quantitative injection charging mechanism according to claim 1, wherein: the upper part of the push rod is provided with two blocking parts, and the movable plate is provided with a bayonet which is embedded between the two blocking parts.

5. The precision quantitative injection charging mechanism according to claim 4, wherein: the lower part of push rod is equipped with spacing portion, spacing portion include low level step and be higher than the stopper of low level step, low level step with the stopper is located the radial both sides of push rod, the stopper is fan-shaped, the upper portion of piston is equipped with a pair of fan-shaped trip portion, trip portion down press the low level step and with the lateral wall of stopper supports and leans on so that the push rod with the filling needle tubing is in coaxial relation.