CN209504721U - A kind of injection molding machine pressing device - Google Patents

Abstract

The utility model discloses a kind of injection molding machine pressing devices, comprising: motor, speed reducer, bearing housing, transverse moving support, pressure sensor, bearing (ball) cover, bearing gland, tapered roller bearing B, bearing block, self-aligning thrust roller bearing, shaft coupling, tapered roller bearing A, ball-screw, feed screw nut, mobile bracket, fixed bracket.When injection device starts pressing, electrical power, drive speed reducer rotation, the output shaft of speed reducer drives moving up and down for ball screw turns and feed screw nut by shaft coupling, drives mobile crossbearer and injector to press downwards, and injector is given to provide pressure force, when pressure reaches preset value, pressure sensor issues signal to pressing system, and pressing motor stops, and injection motor is started to work；After the completion of injection, pressing motor hair turns, and pressing device resets.The advantages that the utility model uses all-electric pressing device, has high transmission accuracy, and staring torque is small, and transmission efficiency is high.

Description

A kind of injection molding machine pressing device

Technical field

The utility model belongs to injection molding machine field, is related to a kind of injection molding machine transmission device.

Background technique

Currently, injection (mo(u)lding) machine is one kind of plastics machinery, abbreviation injector or injection molding machine, it is by thermoplastic or heat The main molding equipment of plastic products of various shapes is made using mould for plastics for solidity plastics.Injection moulding is to pass through note Molding machine and mold are realized.The molding process of general screw injection molding machine is: granular or powdered plastic being added first In machine barrel, and plastics are made to become molten condition by the rotation of screw rod and the heating of machine barrel outer wall, then machine is molded and infused Seat Forward is penetrated, so that nozzle is adjacent to the pouring head of mold, then leads to people's pressure oil to injection cylinder, push ahead screw rod, thus with Very high pressure and faster speed inject melt in the lower Guan Bi mould of temperature, keep by certain time and pressure It is (also known as pressure maintaining), cooling, make its curing molding, can be opened and take out product (purpose of pressure maintaining is prevent melt in die cavity anti- Stream supplements material into die cavity, and guarantees that product has certain density and dimensional tolerance).Injection molding basic demand It is plasticizing, injection and molding.Plasticizing is realization and the premise for guaranteeing shaped article quality, and is to meet molding requirement, injection Enough pressure and speed are must assure that.Simultaneously as injection pressure is very high, very high pressure is correspondingly generated in die cavity (average pressure in die cavity is generally between 20 ~ 45MPa), it is therefore necessary to have sufficiently large mold clamping force.

When injector injects sizing material, sizing material flows through nozzle, runner and then enters die cavity, in the process nozzle and injection port It is in close contact and just can guarantee going on smoothly for injection process；The mold for filling sizing material simultaneously can generate back-pressure to sizing material, in machine Very big axial force is generated under the action of head pressure, this power can promote injection nozzle to separate with mold injection port, in order to guarantee to infuse Injection nozzle and mold injection port are in close contact during penetrating, and to guarantee smoothly completing for injection process, this just needs to design one A reasonable device, this device are exactly pressing device, its effect is exactly the axial direction for balancing mould cavity pressure and generating to head Power, it is ensured that nozzle and mold injection port keep being in close contact in injection process, guarantee that injection smoothly completes.It can be seen that pressing Device is the critical component of injection molding machine.However, the transmission accuracy of existing pressing device is relatively low, and staring torque is very big, passes Efficiency of movement is not high.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of injection molding machine pressing dress It sets, has many advantages, such as that working efficiency can be greatly improved, it is time saving and energy saving.

To achieve the goals above, the utility model is achieved through the following technical solutions: a kind of injection molding machine presses Device, comprising: motor, speed reducer, bearing housing, transverse moving support, pressure sensor, bearing (ball) cover, bearing gland, circular cone rolling Sub- bearing B, bearing block, self-aligning thrust roller bearing, shaft coupling, tapered roller bearing A, ball-screw, feed screw nut, mobile branch Frame, fixed bracket.

Motor, speed reducer and bearing housing are from top to bottom mounted on transverse moving support, and motor is by transmission shaft and slows down Machine is linked, and speed reducer is fixed on bearing housing, and the output shaft of speed reducer is inserted into shaft coupling from upside, and ball-screw is from bearing housing Shaft coupling is inserted into downside, and tapered roller bearing A is mounted on the downside of the shaft coupling shaft shoulder, and self-aligning thrust roller bearing is mounted on shaft coupling On the upside of the shaft shoulder, pressure sensor is housed, bearing housing, bearing (ball) cover pass through spiral shell together between self-aligning thrust roller bearing and bearing block Bolt is fixed on transverse moving support, and pressure sensor can experience pressure signal, and can believe pressure according to certain rule It number is converted into the device or device of the electric signal of available output, ball-screw is threaded onto feed screw nut, and feed screw nut is fixed on On mobile bracket, for tapered roller bearing B between bearing gland and bearing block, bearing gland is bolted on bearing block On, the support of bearing is housed on fixed bracket, the shaft end for ball-screw is fixed, and prevents injector from falling off.

The utility model is in movement, when injection device starts pressing, electrical power, so that speed reducer is driven to rotate, The output shaft of speed reducer drives ball screw turns by shaft coupling, because limited down by mobile bracket cannot for feed screw nut It makes rotating motion, and then converts moving up and down for feed screw nut for the rotary motion of lead screw, because of feed screw nut and mobile bracket It is fixed together, mobile crossbearer and injector mounted thereto can be driven to press downwards, when the nozzle and mold of injector After the contact of sprue gate, pressing device continues to provide pressure force to injector, and pressure force is by the reaction force of screw rod by layer by layer Transmitting acts on pressure sensor, and when pressure reaches preset value, pressure sensor issues signal, pressing electricity to pressing system Machine stops, and injection motor is started to work；After the completion of injection, pressing motor hair turns, and pressing device resets.The utility model is using complete The advantages that electronic pressing device has high transmission accuracy, and staring torque is small, and transmission efficiency is high.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon:

Fig. 1 is the utility model principle schematic diagram；

In figure: 1-motor；2-speed reducers；3-bearing housings；4-transverse moving supports；5-pressure sensors；6-axis Socket end lid；7-bearing glands；8-tapered roller bearing B；9-bearing blocks；10-self-aligning thrust roller bearings；11-shaft couplings Device；12-tapered roller bearing A；13-ball-screws；14-feed screw nuts；15-mobile brackets；16-fixed brackets.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below Combination technology scheme and attached drawing describe specific embodiment of the utility model in detail.

Embodiment: as shown in Figure 1, a kind of injection molding machine pressing device, comprising: motor 1, bearing housing 3, laterally moves speed reducer 2 Dynamic bracket 4, pressure sensor 5, bearing (ball) cover 6, bearing gland 7, tapered roller bearing B8, bearing block 9, thrust force aligning Roller Shaft Hold 10, shaft coupling 11, tapered roller bearing A12, ball-screw 13, feed screw nut 14, mobile bracket 15, fixed bracket 16.

Motor 1, speed reducer 2 and bearing housing 3 are from top to bottom mounted on transverse moving support 4, motor 1 by transmission shaft with Speed reducer 2 is linked, and speed reducer 2 is fixed on bearing housing 3, and the output shaft of speed reducer 2 is inserted into shaft coupling 11, ball wire from upside Thick stick 13 is inserted into shaft coupling 11 on the downside of bearing housing 3, and tapered roller bearing A12 is mounted on the downside of 11 shaft shoulder of shaft coupling, thrust force aligning Roller bearing 10 is mounted on the upside of 11 shaft shoulder of shaft coupling, and pressure sensing is housed between self-aligning thrust roller bearing 10 and bearing block 9 Device 5, bearing housing 3, bearing (ball) cover 6 are bolted on together on transverse moving support 4, and pressure sensor 5 can experience pressure Force signal, and pressure signal can be converted into the device or device of the electric signal of available output, ball according to certain rule Lead screw 13 is threaded onto feed screw nut 14, and feed screw nut 14 is fixed on mobile bracket 15, and tapered roller bearing B8 is located at bearing pressure Between lid 7 and bearing block 9, bearing gland 7 is bolted on bearing block 9, and the support of bearing is housed on fixed bracket 16, Shaft end for ball-screw 13 is fixed, and prevents injector from falling off.

In movement, when injection device starts pressing, motor 1 is powered the present embodiment, so that speed reducer 2 is driven to rotate, The output shaft of speed reducer 2 drives ball-screw 13 to rotate by shaft coupling 11, because feed screw nut 14 is by mobile bracket 15 It cannot make rotating motion under limitation, and then convert moving up and down for feed screw nut 14 for the rotary motion of lead screw, because of lead screw spiral shell Mother 14 is fixed together with mobile bracket 15, and mobile crossbearer and injector mounted thereto can be driven to press downwards, work as note Penetrate machine nozzle contacted with die casting mouth after, pressing device continues to provide pressure force to injector, and pressure force is by screw rod Reaction force acts on pressure sensor 5 by transmitting layer by layer, and when pressure reaches preset value, pressure sensor 5 is to pressing System issues signal, and pressing motor 1 stops, and injection motor is started to work；After the completion of injection, the pressing hair of motor 1 turns, pressing device It resets.The advantages that the present embodiment uses all-electric pressing device, has high transmission accuracy, and staring torque is small, and transmission efficiency is high.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, for For those skilled in the art, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and without departing substantially from this In the case where the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute Attached claim rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims All changes are embraced therein.It should not treat any reference in the claims as limiting related right It is required that.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (3)

1. a kind of injection molding machine pressing device characterized by comprising motor (1), speed reducer (2), bearing housing (3), transverse shifting Bracket (4), pressure sensor (5), bearing (ball) cover (6), bearing gland (7), tapered roller bearing B(8), bearing block (9), thrust Self-aligning roller bearing (10), shaft coupling (11), tapered roller bearing A(12), it is ball-screw (13), feed screw nut (14), mobile Bracket (15), fixed bracket (16)；

Motor (1), speed reducer (2) and the bearing housing (3) is from top to bottom mounted on transverse moving support (4), described Motor (1) is linked by transmission shaft with speed reducer (2), and the speed reducer (2) is fixed on bearing housing (3), and described subtracts The output shaft of fast machine (2) is inserted into shaft coupling (11) from upside, and the ball-screw (13) is inserted into shaft coupling on the downside of bearing housing (3) Device (11), the tapered roller bearing A(12) it is mounted on the downside of shaft coupling (11) shaft shoulder, the self-aligning thrust roller bearing (10) it is mounted on the upside of shaft coupling (11) shaft shoulder, equipped with pressure between the self-aligning thrust roller bearing (10) and bearing block (9) Force snesor (5), the bearing housing (3), bearing (ball) cover (6) are fixed on transverse moving support (4), the ball-screw (13) it is threaded onto feed screw nut (14), the feed screw nut (14) is fixed on mobile bracket (15), the taper roller Bearing B(8) between bearing gland (7) and bearing block (9), the bearing gland (7) is by being fixed on bearing block (9) On, the support of bearing is housed on fixed bracket (16), the shaft end for ball-screw (13) is fixed.

2. injection molding machine pressing device according to claim 1, which is characterized in that the bearing housing (3), bearing (ball) cover (6) it is bolted on transverse moving support (4).

3. injection molding machine pressing device according to claim 2, which is characterized in that the bearing gland (7) passes through bolt It is fixed on bearing block (9).