CN207509603U - A kind of injection molding machine piston rod high-precision connection structure - Google Patents

Abstract

The utility model discloses a high-precision connection structure for piston rods of injection molding machines, which includes a fixed template and an oil cylinder, the fixed template is vertically arranged on the base of the injection molding machine, the oil cylinder includes a cylinder body and a piston rod, and the cylinder body is fixedly arranged on the injection molding machine On the injection seat, the injection seat is slidingly connected with the base, one end of the piston rod is slidingly connected with the cylinder body, and the other end is fixedly connected with the fixed template. Two fixed blocks are provided, and the fixed block is provided with a concave part matched with the end of the piston rod. The concave parts on the two fixed blocks can be cooperatively configured as a limiting hole matched with the outer diameter of the piston rod and a limited slot matched with the connecting plate. The utility model relates to a high-precision connection structure of a piston rod of an injection molding machine, which has the advantages of convenient and fast installation and high connection precision.

Description

A high-precision connection structure for piston rods of injection molding machines

technical field

The utility model relates to the field of injection molding machines, in particular to a high-precision connection structure for piston rods of injection molding machines.

Background technique

In the prior art, the piston rod of the injection molding machine is usually fixedly connected to the fixed platen by means of bolt connection. As shown in FIG. And it is necessary to process the end of the piston rod into a plate-shaped connecting portion 20 that matches the mounting groove 19. The connecting block 18 is provided with a first through hole that penetrates the mounting groove 19, and the connecting portion 20 is provided with a first through hole corresponding to the first through hole. Two through holes, when connecting, the bolt 21 passes through the first through hole and the second through hole, and then cooperates with the nut 22 to fix the end of the piston rod. Due to the pin-hole connection, the installation process It is cumbersome, and the installation accuracy is low. At the same time, a through hole needs to be processed on the piston rod, which destroys the structural strength of the piston rod, thereby affecting the service life of the piston rod.

Contents of the invention

The utility model aims to solve the technical problems mentioned above, and provides a piston rod connection structure with convenient and fast installation and high connection precision.

The utility model is realized through the following technical solutions: a high-precision connection structure for piston rods of injection molding machines, including a fixed template and an oil cylinder, the fixed template is vertically arranged on the base of the injection molding machine, and the oil cylinder includes a cylinder body and a piston rod, The cylinder is fixed on the injection seat of the injection molding machine, the injection seat is slidingly connected with the base, one end of the piston rod is slidingly connected with the cylinder, the other end is fixedly connected with the fixed platen, and the end of the piston rod connected with the fixed platen is provided with a connecting plate , two fixed blocks are detachably arranged on the fixed template, and the fixed block is provided with a concave part matched with the end of the piston rod. Limit slot for plate fit.

Preferably, the recess includes a first recess disposed at the bottom of the fixing block, and a second recess matching the outer diameter of the piston rod, one end of the second recess is connected to the first recess, and the other end extends to the top of the fixing block.

Preferably, the connecting plate is a circular plate body, and the first recess is a semicircular groove.

Preferably, the bottom of the fixed template is provided with a mounting plate parallel to the surface of the base, the mounting plate is provided with a first connection hole, and the base is correspondingly provided with a first threaded connection hole.

Preferably, the fixing block is provided with a second connection hole, and the support plate is correspondingly provided with a second screw connection hole.

Preferably, the base is provided with a fixed seat, the fixed seat is provided with a guide rail, the injection seat is provided with a sliding block, and the sliding block is provided with a connection hole slidingly fitted with the guide rail.

The beneficial effect is: compared with the prior art, when the high-precision connection structure of the piston rod of the injection molding machine of the utility model is installed, firstly, a fixed block is fixedly connected with the fixed template, and then the end of the piston rod is connected with the fixed plate. The concave part on the block is matched, and finally the other fixed block is fixedly connected with the fixed template, so that the concave parts on the two fixed blocks are matched with the end of the piston rod, so as to form a limit structure fixed with the end of the piston rod , to prevent the axial movement of the piston rod. This connection method is simple in structure and does not need to fix the piston rod with bolts. The connection precision is high and the installation is convenient and quick.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is a schematic diagram of a high-precision connection structure of a piston rod of an injection molding machine of the present invention;

Fig. 2 is the structural representation of the fixed block in Fig. 1;

Fig. 3 is a schematic diagram of the connection between the two fixed blocks and the piston rod in Fig. 1;

Fig. 4 is a cross-sectional view of the connecting structure between the piston rod and the fixed template and the fixed block in Fig. 1;

Fig. 5 is a schematic diagram of the connection of the piston rod in the prior art.

Detailed ways

As shown in Figures 1 to 4, a high-precision connection structure for the piston rod 4 of an injection molding machine includes a fixed template 1 and an oil cylinder, the fixed template 1 is vertically arranged on the base 2 of the injection molding machine, and the oil cylinder includes a cylinder body 3 and a piston The rod 4 and the cylinder body 3 are fixedly arranged on the injection seat 5 of the injection molding machine. The injection seat 5 is slidably connected to the base 2. One end of the piston rod 4 is slidably connected to the cylinder body 3, and the other end is fixedly connected to the fixed platen 1. By driving the piston The rod 4 moves, thereby driving the injection seat 5 to move toward or away from the fixed template 1, the end of the connection between the piston rod 4 and the fixed template 1 is provided with a connecting plate 6, the width of the connecting plate 6 is greater than the outer diameter of the piston rod 4, and the fixed template 1 is detachably provided with two fixed blocks 7, and the fixed block 7 is provided with a concave part that matches with the end of the piston rod 4, and the concave parts on the two fixed blocks 7 can be cooperatively configured as a limit hole that is matched with the outer diameter of the piston rod 4 8 and the limiting groove 9 that cooperates with the connecting plate 6, the width of the connecting plate 6 is greater than the outer diameter of the piston rod 4, so that after the connecting plate 6 cooperates with the limiting groove 9, the connecting plate 6 and the limiting groove 9 clamping, and then the end of the piston rod 4 cannot be disengaged from the two fixed blocks 7. When installing, firstly, a fixed block 7 is fixedly connected with the fixed template 1, and then the end of the piston rod 4 is connected to the fixed block. 7, and finally another fixed block 7 is fixedly connected with the fixed template 1, so that the recesses on the two fixed blocks 7 are all matched with the end of the piston rod 4, so as to be configured to be connected with the end of the piston rod 4. The fixed position-limiting structure prevents the piston rod 4 from moving axially. This connection method has a simple structure and does not need to fix the piston rod 4 by bolts. The connection precision is high and the installation is convenient and fast.

Specifically, the recess may include a first recess 10 arranged at the bottom of the fixed block 7, and a second recess 11 matched with the outer diameter of the piston rod 4. The two first recesses 10 are configured as a limiting groove 9, and the limiting groove 9 is connected to the fixing groove 9. The template 1 is connected and configured as a limiting chamber matching the shape of the connecting plate 6. One end of the second recess 11 is connected to the first recess 10, and the other end extends to the top of the fixing block 7. The two second recesses 11 are configured to be in contact with the position limiting The chamber communicates with the limiting hole 8 , and the diameter of the limiting hole 8 matches the outer diameter of the piston rod 4 .

Further, the connecting plate 6 can be a circular plate body, that is, the connecting plate 6 is in the shape of a round cake, the outer diameter of the connecting plate 6 is larger than the outer diameter of the piston rod 4, and the middle part of the connecting plate 6 is fixed to the end of the piston rod 4 Connection, the first recess 10 is a semicircular groove, and the two first recesses 10 are configured as circular grooves that match the connecting plate 6, that is, the diameter of the circular groove matches the diameter of the connecting plate 6, and the depth is consistent with the connecting plate 6. The thickness of the plate 6 matches.

The bottom of the fixed formwork 1 can be provided with a mounting plate 12 parallel to the surface of the base 2, the mounting plate 12 is provided with a first connection hole, and the base 2 is correspondingly provided with a first threaded connection hole, and the threaded connection is adopted. , to facilitate the disassembly and assembly of the fixed formwork 1, and at the same time, the installation plate 12 is provided to make the fixed formwork 1 more stable after installation.

The fixing block 7 can be provided with a second connecting hole 13, and the support plate is correspondingly provided with a second threaded connecting hole, and the fixing block 7 can cooperate with the second connecting hole 13 and the second threaded connecting hole in turn by screws, thereby realizing the fixing block. 7's installation is fixed.

The base 2 can be provided with a fixed seat 14, the fixed seat 14 is provided with a guide rail 15, the injection seat 5 is provided with a sliding block 16, and the sliding block 16 is provided with a connecting hole slidingly matched with the guide rail 15, and the guide rail 15 can be cylindrical. This can make the injection seat 5 slide more smoothly. In order to improve the stability of the injection seat 5 in the sliding process, two guide rails 15 can be provided.

The above embodiments are only used to illustrate the technical solution of the utility model and not to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the utility model shall be covered within the scope of the utility model technical solution.

Claims (6)

1. A high-precision connection structure for the piston rod of an injection molding machine is characterized in that it comprises a fixed template (1) and an oil cylinder, the fixed template (1) is vertically arranged on the base (2) of the injection molding machine, and the oil cylinder includes a cylinder body ( 3) and the piston rod (4), the cylinder (3) are fixedly arranged on the injection seat (5) of the injection molding machine, the injection seat (5) is slidingly connected with the base (2), and one end of the piston rod (4) is connected to the cylinder (3) Sliding connection, the other end is fixedly connected with the fixed template (1), the end of the piston rod (4) connected with the fixed template (1) is provided with a connecting plate (6), and the detachable setting on the fixed template (1) There are two fixed blocks (7), and the fixed block (7) is provided with a concave part that cooperates with the end of the piston rod (4), and the concave parts on the two fixed blocks (7) can be matched with the outer diameter of the piston rod (4) The limit hole (8) and the limit groove (9) matched with the connecting plate (6). 2. A high-precision connection structure for the piston rod of an injection molding machine according to claim 1, characterized in that, the recess includes a first recess (10) arranged at the bottom of the fixed block (7), and is connected with the piston rod (4 ) the outer diameter of the second recess (11), one end of the second recess (11) is connected to the first recess (10), and the other end extends to the top of the fixed block (7). 3. A high-precision connection structure for piston rods of injection molding machines according to claim 2, characterized in that the connecting plate (6) is a circular plate body, and the first recess (10) is a semicircular groove. 4. A high-precision connection structure for piston rods of injection molding machines according to claim 1, characterized in that, the bottom of the fixed plate (1) is provided with a mounting plate (12) parallel to the surface of the base (2) ), the mounting plate (12) is provided with a first connecting hole, and the base (2) is correspondingly provided with a first threaded connecting hole. 5. A high-precision connection structure for piston rods of injection molding machines according to claim 1, characterized in that a second connection hole (13) is provided on the fixed block (7), and a second connection hole (13) is provided on the support plate correspondingly. Threaded connection holes. 6. A high-precision connection structure for piston rods of injection molding machines according to claim 1, characterized in that, the base (2) is provided with a fixed seat (14), and the fixed seat (14) is provided with a guide rail ( 15), the injection seat (5) is provided with a sliding block (16), and the sliding block (16) is provided with a connecting hole slidingly fitted with the guide rail (15).