阅读说明：本技术 具有行程放缓功能的注塑成型用气缸 (Air cylinder with stroke buffering function for injection molding ) 是由 巴佐 于 2020-04-28 设计创作，主要内容包括：本发明涉及一种具有行程放缓功能的注塑成型用气缸,属于注塑成型技术领域,解决了如何能稳定的实现气缸行程放缓的功能的问题,本发明包括行程开关缓冲装置,所述的行程开关缓冲装置包括设置在缸体外壁的连接座,所述的连接座设置第一流体接孔和第二流体接孔,所述的第一流体接孔和第一腔体通过缸体上的第一流体通道连通,所述的第二流体接孔和第二腔体通过缸体上的第二流体通道连通,所述的第二流体接孔设置可拆卸的节流头,所述的节流头与第二流体接孔连接的一端设置直径小于1mm的节流通道。本发明通过一系列的设置,通过纯机械的方式稳定的实现了气缸行程放缓,结构简单,制造成本低,还能根据实际生产需要进行行程速度调节。(The invention relates to an injection molding cylinder with a stroke buffering function, belongs to the technical field of injection molding, and solves the problem of how to stably realize the stroke buffering function of the cylinder, and comprises a stroke switch buffering device, wherein the stroke switch buffering device comprises a connecting seat arranged on the outer wall of a cylinder body, the connecting seat is provided with a first fluid connecting hole and a second fluid connecting hole, the first fluid connecting hole is communicated with a first cavity through a first fluid channel on the cylinder body, the second fluid connecting hole is communicated with a second cavity through a second fluid channel on the cylinder body, the second fluid connecting hole is provided with a detachable throttling head, and one end, connected with the second fluid connecting hole, of the throttling head is provided with a throttling channel with the diameter smaller than 1 mm. According to the invention, through a series of settings, the stroke of the cylinder is stably slowed down in a purely mechanical mode, the structure is simple, the manufacturing cost is low, and stroke speed adjustment can be carried out according to actual production requirements.)

1. The utility model provides a cylinder for injection moulding with stroke relaxs function, is including cylinder body (2) that is equipped with cylinder body base (1), at inside gliding piston (3) from top to bottom that sets up of cylinder body (2), piston (3) link to each other with piston rod (4), piston (3) keep away from the bottom surface of piston rod (4) and enclose synthetic first cavity (21) with cylinder body (2), be equipped with detachable output shaft (5) on piston rod (4), cylinder body (2) upper end sets up sealing washer subassembly (6), sealing washer subassembly (6) and cylinder body (2), piston (3) and piston rod (4) enclose synthetic second cavity (22), its characterized in that: still include travel switch buffer (7), travel switch buffer (7) including setting up connecting seat (71) at cylinder body (2) outer wall, connecting seat (71) set up first fluid hole (711) and second fluid hole (712), first fluid hole (711) and first cavity (21) communicate through first fluid passage (23) on cylinder body (2), second fluid hole (712) and second cavity (22) communicate through second fluid passage (24) on cylinder body (2), second fluid hole (712) link to each other with throttle head (72), the one end that throttle head (72) and second fluid hole (712) are connected set up the internal diameter and are less than 1 mm's throttle passageway (721).

2. The cylinder for injection molding with a stroke relaxing function according to claim 1, characterized in that: the throttling head (72) comprises a runner port (722) and a throttling head body (723), the throttling head body (723) and the runner port (722) are connected through a fastening device (724), the throttling head body (723) is connected with a second fluid connecting hole (712), a throttling channel (721) is arranged at one end, not connected with the runner port (722), of the throttling head body (723), and the inner diameter of the throttling channel (721) is 0.1mm-0.5 mm.

3. The cylinder for injection molding with a stroke relaxing function according to claim 2, characterized in that: the throttling head body (723) comprises a first throttling cavity (723a) and a second throttling cavity (723b), the first throttling cavity (723a) is connected with the second throttling cavity (723b) through a throttling adjusting device (723c), the first throttling cavity (723a) is provided with a throttling channel (721), and the inner diameter of the first throttling cavity (723a) is smaller than that of the second throttling cavity (723 b).

4. The cylinder for injection molding with a stroke relaxing function according to claim 1, characterized in that: sealing washer subassembly (6) including cooling water jacket (61), cooling water jacket (61) use piston rod (4) as the axle, piston rod (4) and cooling water jacket (61) sliding connection, the position that cooling water jacket (61) inboard meets with piston rod (4) set up a plurality of sealed grooves (611) that are equipped with piston rod (4) of sealing washer and dust ring, the position that meets with cylinder body (2) in cooling water jacket (61) outside set up second cavity seal groove (612) that are equipped with lubricated sealing washer, cooling water jacket (61) inside set up cooling bath (613), cooling water jacket (61) and cylinder body (2) fixed connection.

5. The cylinder for injection molding with a stroke relaxing function according to claim 4, characterized in that: the cooling groove (613) is provided with a reinforcing rib (614), the cooling water jacket (61) is provided with cooling groove through holes (615) on two sides of the reinforcing rib (614), and the cooling groove through holes (615) are arranged above the cylinder body (2).

6. The cylinder for injection molding with a stroke relaxing function according to claim 4, characterized in that: cooling water jacket (61) still include by supporting part (616) and let base (62) that position portion (617) constitute, base (62) constitute second cavity seal groove (612) with cooling water jacket (61), let position portion (617) let the position by the one end that base (62) and cylinder body (2) link to each other and form, let position portion (617) and cylinder body (2) and piston (3) enclose synthetic second cavity (22), the one side that supporting part (616) and piston (3) meet set up the supplementary groove of admitting air (618) of a plurality of second cavities (22).

7. The cylinder for injection molding with a stroke relaxing function according to claim 1, characterized in that: the bottom surface of the piston (3) is provided with a process hole (31) at the axis position, and the side surface of the piston (3) is provided with a piston lubricating groove (33) provided with a sealing ring.

8. The injection-molding cylinder with a stroke relaxing function according to claim 7, wherein: a convex part (32) is arranged on the bottom surface of the piston (3), and a chamfer is arranged at the position where the convex part (32) is connected with the process hole (31).

9. The cylinder for injection molding with a stroke relaxing function according to claim 1, characterized in that: the piston rod (4) is provided with an output shaft mounting seat (41), the output shaft (5) comprises an output shaft base (51), the output shaft mounting seat (41) is provided with a limiting structure (411) of the output shaft base (51), and the output shaft mounting seat (41) is further provided with an output shaft protection ring (412).

10. The cylinder for injection molding with a stroke relaxing function according to claim 1, characterized in that: the throttle head (72) is connected with the one-way throttle valve, the cooling water jacket (61) is provided with an installation table (9) fixedly connected with the cooling water jacket (61), and the output shaft protection ring (412) and the installation table (9) form an anti-rotation structure.

Technical Field

The invention belongs to the technical field of injection molding, relates to a cylinder used in injection molding, and particularly relates to a cylinder for injection molding with a stroke slowing function.

Background

When the molten plastic is injected into the mold cavity and cooled to the end, the product is taken out along with the mold opening action. For a mold with high product quality requirement, the mold needs to be opened slowly, namely, the stroke of the cylinder is required to be opened or closed slowly, so that impact and vibration caused by mold opening inertia are reduced stably and slowly. However, the prior art has concentrated on the use of a throttle valve. Chinese invention patent [ application No.: CN201610580194.6 discloses a cylinder speed regulating device adapted to a wide stroke range, comprising: check valve I, check valve II, choke valve I, choke valve II, cylinder, electromagnetic switch valve I, controller, electromagnetic switch valve II and electromagnetic switch valve III. The electromagnetic switch valve I is respectively connected with the check valve I and the check valve II, the check valve I and the check valve II are respectively connected with a rodless cavity and a rod cavity of the cylinder, and the two check valves are conducted when gas flows into the direction of the cylinder. And a bypass loop is connected between the check valve II and the rodless cavity, and the bypass loop is formed by connecting an electromagnetic switch valve III and a throttle valve II in series. Likewise, a similar bypass circuit is connected between the non-return valve I and the rod chamber. The invention can regulate the speed of the short-stroke cylinder, and has the advantages of wide speed regulation range and stepless speed regulation. However, the flow rate of the throttle valve is not only dependent on the area of the throttle orifice, but also related to the pressure difference between the front and the rear of the throttle orifice, and the rigidity of the valve is small, so the throttle valve is only suitable for occasions with small load change of an actuating element and low speed stability requirement.

Therefore, how to stably realize the function of slowing down the cylinder stroke becomes a problem which needs to be solved urgently.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide an injection molding cylinder having a stroke relaxing function.

In order to achieve the purpose, the invention adopts the following technical scheme: an air cylinder for injection molding with a stroke buffering function comprises a cylinder body provided with a cylinder body base, a piston capable of sliding up and down is arranged in the cylinder body, the piston is connected with a piston rod, the bottom surface, far away from the piston rod, of the piston and the cylinder body enclose a first cavity, a detachable output shaft is arranged on the piston rod, a sealing ring assembly is arranged at the upper end of the cylinder body, the sealing ring assembly, the cylinder body, the piston and the piston rod enclose a second cavity, and the air cylinder further comprises a stroke switch buffering device, the stroke switch buffering device comprises a connecting seat arranged on the outer wall of the cylinder body, the connecting seat is provided with a first fluid connecting hole and a second fluid connecting hole, the first fluid connecting hole is communicated with the first cavity through a first fluid channel on the cylinder body, the second fluid connecting hole is communicated with the second cavity through a second fluid channel on the cylinder body, and the second fluid connecting hole is connected with, and one end of the throttling head connected with the second fluid connecting hole is provided with a throttling channel with the inner diameter smaller than 1 mm.

In the above-mentioned cylinder for injection moulding with stroke buffering function, the choke head include runner mouth and choke head body, choke head body and runner mouth pass through fastener and connect, the choke head body with the second fluid connection hole be connected, the one end that the choke head body links to each other with the runner mouth set up the throttle passageway, throttle passageway internal diameter be 0.1mm-0.5 mm.

In the above-mentioned cylinder for injection molding with stroke cushioning function, the throttle head body include first throttle chamber and second throttle chamber, first throttle chamber and second throttle chamber pass through the throttle adjusting device and link to each other, first throttle chamber sets up the throttle passageway, first throttle intracavity internal diameter be less than second throttle chamber internal diameter.

In foretell cylinder for injection moulding that has stroke and relax function, sealing washer subassembly include cooling jacket, cooling jacket use the piston rod as the axle, piston rod and cooling jacket sliding connection, the position that cooling jacket inboard meets with the piston rod set up the sealed slot of a plurality of piston rods that are equipped with sealing washer and dust ring, the position that meets with the cylinder body in the cooling jacket outside set up the second cavity seal groove that is equipped with lubricated sealing washer, cooling jacket inside set up the cooling bath, cooling jacket and cylinder body fixed connection.

In the above injection molding cylinder with the stroke slowing function, the cooling groove is provided with the reinforcing ribs, the cooling jacket is provided with cooling groove through holes at two sides of the reinforcing ribs, and the cooling groove through holes are arranged above the cylinder body.

In foretell cylinder for injection moulding that has stroke and relax function, cooling water jacket still include the base of constituteing by supporting part and the portion of stepping down, base and cooling water jacket constitute second cavity seal groove, the portion of stepping down by the one end that base and cylinder body link to each other step down and form, the portion of stepping down and cylinder body and piston enclose synthetic second cavity, the one side that supporting part and piston meet set up the auxiliary groove that admits air of a plurality of second cavities.

In the above cylinder for injection molding with a stroke slowing function, the bottom surface of the piston is provided with a process hole at the axis position, and the side surface of the piston is provided with a piston lubricating groove provided with a sealing ring.

In the above-described injection molding cylinder having a stroke relaxing function, the bottom surface of the piston is provided with a convex portion, and a chamfer is provided at a position where the convex portion contacts the threaded hole.

In the above injection molding cylinder with the stroke slowing function, the piston rod is provided with an output shaft mounting seat, the output shaft comprises an output shaft base, the output shaft mounting seat is provided with a limiting structure of the output shaft base, and the output shaft mounting seat is further provided with an output shaft protection ring.

In the injection molding cylinder with the stroke slowing function, the throttle head is connected with the one-way throttle valve, the cooling water jacket is provided with the mounting table fixedly connected with the cooling water jacket, and the output shaft protection ring and the mounting table form an anti-rotation structure.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, through a series of settings, the stroke of the cylinder is stably slowed down in a purely mechanical mode, the structure is simple, the manufacturing cost is low, and stroke speed adjustment can be carried out according to actual production requirements.

2. The invention also carries out buffer protection on the stroke end of the cylinder while slowing down the stroke of the cylinder, prolongs the service life of the cylinder and reduces the actual production cost.

3. The invention has the advantages that a plurality of parts are arranged into structures convenient for inspection and replacement, the stroke quality of the cylinder is ensured, meanwhile, the operation safety is ensured, and the consumption cost in the production process is reduced.

Drawings

FIG. 1 is a schematic view of the structure provided by the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 in another orientation;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of a part of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a cross-sectional view of a part;

FIG. 7 is a schematic structural view of a part of the present invention;

FIG. 8 is a cross-sectional view of FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 7 in another orientation;

FIG. 10 is a schematic structural view of another component of the present invention;

FIG. 11 is a cross-sectional view of FIG. 9;

in the figure, a cylinder base 1, a cylinder 2, a piston 3, a piston rod 4, a first cavity 21, an output shaft 5, a seal ring assembly 6, a second cavity 22, a travel switch buffer device 7, a connecting seat 71, a first fluid connection hole 711, a second fluid connection hole 712, a first fluid channel 23, a second fluid channel 24, a throttle head 72, a throttle channel 721, a runner port 722, a throttle head body 723, a fastening device 724, a first throttle cavity 723a, a second throttle cavity 723b, a throttle adjusting device 723c, a cooling water jacket 61, a sealing groove 611, a second cavity sealing groove 612, a cooling groove 613, a reinforcing rib 614, a cooling groove through hole 615, a supporting part 616, a receding part 617, a base 62, an intake auxiliary groove 618, a gasket groove 31, a gasket 32, a piston lubricating groove 33, a cylinder protective shell 8, a mounting seat 81, a connecting seat mounting groove 82, an output shaft mounting seat 41, an output shaft base 51, a mounting seat 51, limit structure 41, output shaft protection ring 412, mount table 9.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.