CN210525754U

CN210525754U - Single-cylinder type injection device

Info

Publication number: CN210525754U
Application number: CN201921456087.8U
Authority: CN
Inventors: 陈军寿; 李建军; 蒋涛; 王岳鹏; 谭万红; 白春光
Original assignee: Guangdong Bloomachine Co ltd
Current assignee: Guangdong Bloomachine Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-05-15
Anticipated expiration: 2029-09-03

Abstract

The utility model discloses a single-cylinder injection device, which comprises a bracket, an oil circuit manifold block, an injection piston, an injection rear end cover, an injection plunger, an injection seat, a transmission shaft, a motor and a motor seat, wherein the injection seat and the motor seat are both arranged on the bracket, the motor is arranged on the motor seat, the motor is connected with the transmission shaft, the injection piston is sheathed on the transmission shaft, the injection seat and the injection rear end cover are both sleeved on the injection piston, the injection rear end cover is fixedly connected with the injection seat, the injection seat is provided with an extension section, the extension section is provided with an injection and retraction oil cavity, one end of the injection and retraction plunger is installed in the injection and retraction oil cavity, the other end of the injection and retraction plunger is fixedly connected with the motor seat, the injection piston is positioned right above the injection and retraction plunger, an injection oil cavity is defined by the injection piston, the injection rear end cover and the injection seat, and the injection oil cavity and the injection and retraction oil cavity are respectively communicated with the oil circuit manifold block.

Description

Single-cylinder type injection device

Technical Field

The utility model belongs to the technical field of the injection machine design and specifically relates to a single cylinder formula injection device is related to.

Background

An injection molding machine is also known as an injection molding machine or an injection machine. It is a main forming equipment for making various shaped plastic products from thermoplastic plastics or thermosetting plastics by using forming mould. And a key component of an injection molding machine is its injection mechanism.

The injection mechanism of traditional injection molding machine is generally only equipped with the injection piston, through the forward or backward motion of single injection piston, realizes injecting and penetrates and moves back the action, and at the back-off in-process that penetrates, the injection piston backward moving speed is slower, lacks guider moreover, takes place skew or other trouble easily, influences the normal operating of equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single cylinder formula injection device can solve one or more in the above problem.

According to one aspect of the utility model, a single-cylinder injection device is provided, comprising a bracket, an oil circuit manifold block, an injection piston, an injection rear end cover, an injection retreating plunger, an injection seat, a transmission shaft, a motor and a motor seat, wherein the injection seat and the motor seat are both arranged on the bracket, the motor is arranged on the motor seat, the motor is connected with the transmission shaft, the injection piston is sleeved on the transmission shaft and is fixedly connected with the motor seat, the injection seat and the injection rear end cover are both sleeved on the injection piston, the injection rear end cover is fixedly connected with the injection seat, the injection seat is provided with an extension section, the extension section is provided with an injection retreating oil cavity, one end of the injection retreating plunger is arranged in the injection retreating oil cavity, the other end is fixedly connected with the motor seat, the injection piston is positioned right above the injection retreating plunger, and an injection oil cavity is enclosed among the injection piston, the, and the injection oil cavity and the injection and retraction oil cavity are respectively communicated with the oil circuit manifold block.

The utility model has the advantages that: the utility model discloses well injection piston is located and penetrates directly over moving back the plunger, makes injection piston and the occupation space who penetrates moving back the plunger diminish, makes injection seat lateral distance narrow, saves space. The injection and retraction plunger plays a role in main work and guide in the injection and retraction process, so that the injection plunger is prevented from deviating, the injection and retraction speed of the injection plunger can be increased, and the rapid retraction is realized. The support plays supporting and fixed action, and injection rear end cover is used for forming the injection oil pocket, and injection seat and extension section are used for installing injection piston and shooting and moving back the plunger to and form injection oil pocket and shooting and moving back the oil pocket, be convenient for inject and shooting and moving back the operation. The motor can drive the transmission shaft to rotate, and the motor seat plays a role in supporting and fixing the motor and the injection piston. The utility model has the advantages that the injection plunger plays a guiding role on the injection piston, the injection speed is improved, and the failure rate of the injection device is reduced; the injection piston and the injection retreating plunger are vertically installed, so that the transverse distance of the injection seat is shortened, the occupied space of the injection seat is reduced, and the injection device is more suitable for an internal circulation mode locking structure.

In some embodiments, the utility model discloses still include solid fixed ring, check lock ring and bearing, the bearing is connected with injection piston and transmission shaft respectively, the check lock ring cover is established on the transmission shaft to press on the bearing, solid fixed ring cover is established on the check lock ring, gu fixed ring and injection piston fixed connection. The gap between the bearing and the injection piston of the existing injection device is not easy to adjust, and the bearing is easy to loosen. Through the locking ring pressing bearing, the fixing ring is sleeved on the locking ring and is fixedly connected with the injection piston, the assembling mode can prevent the bearing from loosening, moving and even falling off, the failure rate is reduced, the injection operation can be smoothly carried out, and the production efficiency is improved.

In some embodiments, the utility model discloses still include screw rod, barrel, penetrate mouth and barrel seat, barrel seat and injection seat fixed connection, the one end of barrel is installed on the barrel seat, the other end of barrel with penetrate mouth fixed connection, the screw rod is installed in the barrel, the one end of screw rod is connected with the transmission shaft. In the injection process, the injection piston moves forwards linearly to push the screw rod to move forwards in the machine barrel until the front end of the screw rod moves to the position of the nozzle, and the injection is finished. The machine barrel seat fixes the machine barrel on the injection seat. During storage, the motor drives the transmission shaft to rotate, the transmission shaft drives the screw to rotate, and when the screw rotates, the injection molding material liquid is driven to move forwards, so that the injection molding material liquid is filled in the machine barrel.

In some embodiments, the locking ring is in threaded engagement with the retaining ring. The clearance of the bearing can be easily adjusted, the normal working state of the bearing is ensured, and the service life of the bearing is prolonged.

In some embodiments, the bearing is a tapered roller bearing. The tapered roller bearing can bear radial load and axial load at the same time.

In some embodiments, the present invention further comprises a hopper assembly mounted to the barrel housing, the hopper assembly being in communication with the barrel. The injection molding material liquid enters the machine barrel through the hopper assembly, and the screw rods rotate in front of each other to drive the injection molding material liquid to move forwards.

In some embodiments, the axes of the injection piston, drive shaft, and barrel are on the same horizontal line. From this, improvement that can be fine the utility model discloses an injection precision reduces injection device's fault rate.

In some embodiments, the support comprises two linear guide rails, and the two linear guide rails are symmetrically arranged on the support. The injection seat and the motor seat can move along the linear guide rails by arranging the two linear guide rails, so that the injection and ejection speed is increased, a guiding effect is achieved, and the production efficiency is improved.

In some embodiments, the injection seat is further provided with an extension arm, the extension arm is provided with a first sliding block, the extension section is provided with a third sliding block, the motor seat is provided with a second sliding block, and the first sliding block, the second sliding block and the third sliding block are matched with the linear guide rail. Through first slider, second slider and third slider, the utility model discloses can follow linear guide forward or rearward movement, make before the injection penetrate the mouth and hug closely the mould, make after the injection penetrate the mouth and keep away from the mould. In the injection and ejection processes, when the injection piston moves forwards or the ejection plunger moves backwards, the motor seat can also move forwards or backwards along the linear guide rail through the second sliding block, so that the moving speed and the production efficiency are improved.

In some embodiments, the utility model discloses still include the hydro-cylinder, the hydro-cylinder is two, two the hydro-cylinder is diagonal angle symmetric distribution, the hydro-cylinder is installed on the injection seat, the oil circuit manifold block is installed on the injection seat. The two oil cylinders are symmetrically distributed in the opposite angles, so that the contact force of the nozzle on the axis of the machine barrel is ensured, and unbalance loading and glue leakage are avoided.

Drawings

Fig. 1 is a schematic cross-sectional view of a single-cylinder injection device according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a section structure diagram a of a single-cylinder injection device according to an embodiment of the present invention.

Fig. 3 is a schematic view of the overall structure of a single-cylinder injection device according to an embodiment of the present invention.

Fig. 4 is a top view of a single cylinder injection device according to an embodiment of the present invention.

Fig. 5 is a left side view of a single cylinder injection device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-5, the utility model discloses a single cylinder type injection device, including support 1, hydro-cylinder 2, oil circuit manifold block 3, injection seat 7, extension 71, injection piston 4, penetrate and move back plunger 6, injection rear end cap 5, motor 19, transmission shaft 10, bearing 13, check ring 12, solid fixed ring 11, screw rod 17, barrel 14, penetrate mouth 15, hopper subassembly 18, motor seat 20 and barrel seat 16.

The bracket 1 comprises two linear guide rails 21, and the two linear guide rails 21 are symmetrically arranged on the bracket 1.

The injection seat 7 is installed on the support 1, the injection seat 7 is provided with a first sliding block 22 and a third sliding block 24, the number of the first sliding blocks 22 is two, the number of the third sliding blocks 24 is two, the two first sliding blocks 22 are respectively matched with the two linear guide rails 21, the two third sliding blocks 24 are respectively matched with the two linear guide rails 21, the injection seat 7 can move forwards or backwards along the two linear guide rails 21 through the first sliding blocks 22 and the third sliding blocks 24, and the direction deviation is avoided when the injection seat moves. The first slider 22 and the third slider 24 can be clamped with the linear guide rail 21, the first slider 22 and the third slider 24 are fixed on the linear guide rail 21, and the injection seat 7 is fixed at a specific position for injection processing.

The oil manifold block 3 is mounted on the injection seat 7 by bolts. The oil circuit manifold block 3 is respectively communicated with the injection oil cavity 8 and the injection and retraction oil cavity 9, so that oil circuit piping is simple and convenient to operate and maintain.

The motor 19 is a hydraulic motor, the motor seat 20 is installed on the support 1, the motor 19 is installed on the motor seat 20 through bolts, the transmission shaft 10 is connected with an output shaft of the motor 19, the injection piston 4 is sleeved on the transmission shaft 10 and fixedly connected with the motor seat 20, the injection seat 7 and the injection rear end cover 5 are both sleeved on the injection piston 4, the injection rear end cover 5 is connected with the injection seat 7 through bolts, the injection seat 7 is provided with an extension section 71, the extension section 71 is provided with an injection and withdrawal oil cavity 9, and the cross-sectional area of the extension section 71 is smaller than that of a main body of the injection seat 7. One end of the injection plunger 6 is arranged in the injection oil cavity 9, the other end of the injection plunger 6 is connected with the motor seat 20 through a bolt, the injection piston 4 is positioned right above the injection plunger 6, and an injection oil cavity 8 is defined among the injection piston 4, the injection rear end cover 5 and the injection seat 7.

The hydraulic oil flows into the injection oil cavity 8 from the oil circuit manifold block 3, and the hydraulic oil pushes the injection piston 4 to move forwards along the injection seat 7 for injection. After injection is finished, hydraulic oil flows into the oil ejecting cavity 9 from the oil circuit manifold block 3, the hydraulic oil pushes the ejecting plunger 6 to move backwards, and the injection piston 4 moves backwards along the injection seat 7 to perform ejecting operation.

The bearing 13 is a tapered roller bearing, the tapered roller bearing is installed between the injection piston 4 and the transmission shaft 10, the locking ring 12 is sleeved on the transmission shaft 10 and is pressed on the tapered roller bearing, and the fixing ring 11 is sleeved outside the locking ring 12 and is in threaded fit with the locking ring 12. The fixing ring 11 is fixedly connected to the injection piston 4 by means of bolts. The locking ring 12 is in threaded fit with the fixing ring, and the play of the tapered roller bearing can be easily adjusted. The fixing ring 11 is fixedly connected with the injection piston 4, and the locking ring 12 compresses the tapered roller bearing to play a good anti-loosening effect.

The motor base 20 is provided with two second sliding blocks 23, and the two second sliding blocks 23 are respectively matched with the two linear guide rails 21. The motor base 20 can be linearly moved forward or backward along the linear guide 21 by two second sliders 23.

The cylinder seat 16 is fixedly connected with the injection seat 7, one end of the cylinder 14 is arranged in the cylinder seat 16, and the other end is connected with the nozzle 15 in a welding way. The screw 17 is connected to the drive shaft 10, and the screw 17 is mounted in the cylinder 14. A hopper assembly 18 is mounted on the barrel mount 16, the hopper assembly 18 communicating with the barrel 14, the lower end of the hopper assembly 18 entering the barrel 14 and being located above the screw 17. During storing, the injection liquid enters the machine barrel 14 from the hopper assembly 18, the screw 17 rotates forwards, and the injection liquid is driven by the screw 17 to flow forwards. The axes of the rear injection piston 4, the drive shaft 10 and the barrel 14 are arranged on the same horizontal line.

The two oil cylinders 2 are arranged on two sides of the injection seat 7 in a diagonal symmetry mode, so that the contact force of the injection nozzle 15 and the axis are in the same position, and unbalance loading and glue leakage are avoided.

The utility model discloses a concrete working method: use the utility model discloses when moulding plastics, the drive injection seat 7 moves forward, makes first slider 22, second slider 23 and third slider 24 follow linear guide 21 and moves forward, makes and penetrate mouth 15 and paste tight mould, with

first slider

22 and 24 cards of third slider on linear guide 21, will the utility model discloses the rigidity.

The injection molding material liquid is added into the material liquid component 18, the hydraulic motor is started, the transmission shaft 10 rotates to drive the screw 17 to move forwards, the injection molding material liquid enters the machine barrel 14 and is driven by the screw 17 to flow forwards, and when the machine barrel 14 is filled with the material liquid, the material storage is finished. And (3) performing injection operation, wherein hydraulic oil flows into the injection oil cavity 8 through the oil circuit manifold block 3, the injection piston 4 and the screw 17 are pushed to move forwards, the screw 17 extrudes injection molding material liquid in the machine barrel 14 outwards, and the injection molding material liquid is injected into a mold through the injection nozzle 15. After the injection, hydraulic oil flows from oil circuit manifold block 3 and incides to move back oil pocket 9, and hydraulic oil pushes to penetrate and moves back plunger 6 rearward movement, drives screw rod 17, injection piston 4 and motor seat 20 rearward movement simultaneously, penetrates and moves back the operation, and because the cross-section that extra extension 71 set up is less, extension 71's oil return volume is little during the injection, and the oil return resistance is little, makes the utility model discloses can more be fit for high-speed the ejection. When the injection molding is completed, the injection base 7 and the motor base 20 can be moved backward by the first slider 22, the second slider 23, and the third slider 24 to move the nozzle 15 away from the mold.

The over-injection retreating plunger 6 of the injection device plays a role in guiding the injection piston 4, so that the injection retreating speed is improved, and the failure rate of the injection device is reduced; set up injection piston 4 directly over penetrating and moving back plunger 6, make injection piston 4 diminish with penetrating the occupation space who moves back plunger 6, make injection seat 7 lateral distance narrow down, be fit for the use of inner loop mode locking structure, can also easily adjust bearing 13 play, have good locking effect, unbalance loading and leaking when can avoiding injecting glue.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A single-cylinder injection device is characterized by comprising a support (1), an oil circuit manifold block (3), an injection piston (4), an injection rear end cover (5), an injection retreating plunger (6), an injection seat (7), a transmission shaft (10), a motor (19) and a motor seat (20), wherein the injection seat (7) and the motor seat (20) are both installed on the support (1), the motor (19) is installed on the motor seat (20), the motor (19) is connected with the transmission shaft (10), the injection piston (4) is sleeved on the transmission shaft (10) and is fixedly connected with the motor seat (20), the injection seat (7) and the injection rear end cover (5) are both sleeved on the injection piston (4), the injection rear end cover (5) is fixedly connected with the injection seat (7), the injection seat (7) is provided with an extension section (71), and the extension section is provided with an injection retreating oil cavity (9), one end of the injection and retreat plunger (6) is installed in the injection and retreat oil cavity (9), the other end of the injection and retreat plunger (6) is fixedly connected with the motor seat (20), the injection piston (4) is located right above the injection and retreat plunger (6), an injection oil cavity (8) is defined between the injection piston (4), the injection rear end cover (5) and the injection seat (7), and the injection oil cavity (8) and the injection and retreat oil cavity (9) are respectively communicated with the oil circuit manifold block (3).

2. The single-cylinder injection device according to claim 1, further comprising a fixing ring (11), a locking ring (12) and a bearing (13), wherein the bearing (13) is connected with the injection piston (4) and the transmission shaft (10) respectively, the locking ring (12) is sleeved on the transmission shaft (10) and pressed on the bearing (13), the fixing ring (11) is sleeved outside the locking ring (12), and the fixing ring (11) is fixedly connected with the injection piston (4).

3. Single-cylinder injection device according to claim 2, wherein the locking ring (12) is screw-fitted with the fixing ring (11).

4. A single cylinder injection device according to claim 2, wherein the bearing (13) is a tapered roller bearing.

5. A single-cylinder injection unit according to claim 1, further comprising a screw (17), a cylinder (14), a nozzle (15) and a cylinder base (16), wherein the cylinder base (16) is fixedly connected with the injection base (7), one end of the cylinder (14) is mounted on the cylinder base (16), the other end of the cylinder (14) is fixedly connected with the nozzle (15), the screw (17) is mounted in the cylinder (14), and one end of the screw (17) is connected with the transmission shaft (10).

6. Single-cylinder injection device according to claim 5, further comprising a hopper assembly (18), said hopper assembly (18) being mounted on the barrel housing (16), said hopper assembly (18) being in communication with the screw (17).

7. Single-cylinder injection device according to claim 5, characterized in that the axes of the injection piston (4), the drive shaft (10) and the barrel (14) are on the same horizontal line.

8. Single cylinder injection device according to claim 1, wherein the holder (1) comprises two linear guides (21), the two linear guides (21) being arranged on the holder (1) in a left-right symmetrical manner.

9. Single-cylinder injection device according to claim 8, wherein the injection base (7) is further provided with an extension arm (72), the extension arm (72) is provided with a first slider (22), the extension section (71) is provided with a third slider (24), the motor base (20) is provided with a second slider (23), and the first slider (22), the second slider (23) and the third slider (24) are all matched with the linear guide (21).

10. The single-cylinder injection device according to claim 1, further comprising two oil cylinders (2), wherein the two oil cylinders (2) are diagonally and symmetrically distributed, the two oil cylinders (2) are mounted on the injection seat (7), and the oil manifold (3) is mounted on the injection seat (7).