Mold locking mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machine mold locking, and discloses an injection molding machine mold locking mechanism which comprises a main plate, the top of the main plate is fixedly connected with a connecting frame, the top of the main plate is fixedly connected with a fixed mold plate, the side wall of the connecting frame is slidably connected with a movable mold plate, and the inner wall of the main plate is provided with a fixing assembly. The fixing assembly is used for fixing the fixed mold plate and the movable mold plate; according to the mold locking mechanism of the injection molding machine, molds on the surfaces of a movable mold plate and a fixed mold plate are attached to each other, at the moment, an L-shaped plate penetrates through a clamping block arranged on the side wall of a main plate, an inserting rod penetrates through the L-shaped plate and the clamping block, fixing between the movable mold plate and the main plate is completed, a servo motor is driven to drive a two-way threaded rod to rotate, a sliding block drives a fixing frame to slide towards the middle, and then a threaded bolt is rotated; the threaded bolt drives the fixing plate to tightly press the movable mold plate, at the moment, the fixing plate, the L-shaped plate and the pushing air cylinder are arranged on the periphery of the movable mold plate for fixing, extrusion force borne by the movable mold plate can be evenly distributed in the injection molding process, and the movable mold plate can be prevented from deforming due to the extrusion force of raw materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine locking mechanism technical field, concretely is a kind of injection molding machine locking mechanism. BACKGROUND

[0002] Injection molding machine is also named injection molding machine or injection machine.It is the main forming equipment of thermoplastic or thermosetting plastic into various shapes of plastic products using plastic forming mold, and the locking mechanism is an important component of injection molding machine, which provides sufficient pre-tightening force for the mold during forming, wherein the announcement number CN221937423U discloses a kind of injection molding machine locking mechanism, including base and fixed mold installed on base, the side wall of base four corners is fixed with support column, the end of each support column away from base is fixed with fixed plate, each support column is slidably provided with sliding block, dynamic mold is installed between each sliding block, fixed plate is installed with push cylinder, the piston rod of push cylinder penetrates fixed plate and is fixedly connected with dynamic mold, the bottom of dynamic mold is installed with annular limit plate, annular limit groove is formed in fixed mold and matched with annular limit plate, locking assembly is further provided on base, sliding block passes through shaft sleeve to reduce the friction between sliding block and support column, thereby improving service life, spring is installed on support column to play the role of buffering, thereby protecting fixed mold and dynamic mold, fixed mold and dynamic mold are further limited by annular limit plate and limit column one, to prevent fixed mold and dynamic mold from being offset when cooperating, and fixed mold and dynamic mold are locked by locking assembly.

[0003] However, the above scheme has the following disadvantages in actual use: the dynamic mold plate is locked by the pressure of telescopic hydraulic cylinder only, and in the injection molding process, the raw material is injected into the mold cavity at high pressure, which generates a mold supporting force, and the pressure of telescopic hydraulic cylinder can not completely offset this force, resulting in that the mold is opened, and if the pressure of telescopic hydraulic cylinder is too large, the dynamic mold is prone to elastic deformation, and the support columns are arranged around the dynamic mold plate and the fixed mold plate, so that the mold installed on the surface of the dynamic mold plate and the fixed mold plate is difficult to replace. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides an injection molding machine locking mechanism, which has the advantages of fixing the dynamic mold plate and the fixed mold plate, and avoids the displacement and deformation of the dynamic mold plate.

[0005] To fix the dynamic mold plate and the fixed mold plate, the utility model provides the following technical scheme:

[0006] An injection molding machine locking mechanism, comprising a main plate, a connecting frame fixedly connected to the top of the main plate, a fixed mold plate fixedly connected to the top of the main plate, a dynamic mold plate slidably connected to the side wall of the connecting frame, and a fixing assembly installed on the inner wall of the main plate, the fixing assembly being used for fixing the fixed mold plate and the dynamic mold plate, further comprising:

[0007] The fixed assembly includes a servo motor fixedly installed on the side wall of the main plate, a two-way threaded rod fixedly connected to the output end of the servo motor, sliding blocks threadedly connected to the side walls of the two-way threaded rod, a fixed frame fixedly connected to the top of the sliding block on the surface of the main plate, a threaded bolt threadedly connected to the top of the fixed frame, and a fixed plate rotatably connected to the bottom end of the threaded bolt.

[0008] According to some embodiments, the L-shaped plate is clamped on the top of the movable die plate, the main plate is fixedly connected with a clamping block, and the L-shaped plate can penetrate through the clamping block, the side walls of the L-shaped plate and the clamping block are both provided with clamping holes, a plug rod is slidably connected to the side wall of the clamping block, and the plug rod can penetrate through the L-shaped plate and the clamping block.

[0009] According to some embodiments, the top of the connecting frame is fixedly connected with a push air cylinder, the piston rod at the end of the push air cylinder is fixedly connected with the movable die plate through the connecting frame, a connecting rod is fixedly connected between the main plate and the connecting frame, the connecting rod is slidably connected with a connecting plate, a fixed rod is fixedly connected between the connecting plate and the movable die plate, and the fixed frame is located between the fixed rods.

[0010] According to some embodiments, the top of the L-shaped plate is threadedly connected with a fixed bolt, and the fixed bolt extends into the inner cavity of the movable die plate through the L-shaped plate, and the L-shaped plate and the clamping block are provided in multiple groups and correspond to each other, and the surfaces of the fixed die plate and the movable die plate are both provided with mounting holes.

[0011] Beneficial effects

[0012] The utility model provides a kind of injection molding machine locking mechanism, with the following beneficial effects:

[0013] (1) the injection molding machine locking mechanism, the mold of movable die plate and fixed die plate surface mutually adheres, at this time L-shaped plate penetrates the clamping block of main plate side wall setting, using plug rod penetrates L-shaped plate and clamping block, complete the fixing between movable die plate and main plate, drive servo motor to drive two-way threaded rod rotation, so that sliding block drives fixed frame to slide to middle, again rotate threaded bolt, threaded bolt drives fixed plate to compress movable die plate, at this time movable die plate periphery is fixed by fixed plate, L-shaped plate and push air cylinder, so that when injection molding, the extrusion force that movable die plate receives can be evenly shared, can avoid that movable die plate is deformed by raw material extrusion force;

[0014] (2) the injection molding machine locking mechanism, L-shaped plate is installed in movable die plate top by fixed bolt, it is convenient to disassemble, to replace the mold of movable die plate and fixed die plate surface in turn. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model device;

[0016] Figure 2 It is the partial section structure schematic diagram of the utility model device;

[0017] Figure 3 It is a structural schematic view (front view) of the device of the utility model;

[0018] Figure 4 It is a working structural schematic view (front view) of the device of the utility model.

[0019] In the figure: 1, main plate; 101, connecting frame; 102, fixed die plate; 103, movable die plate; 2, fixed assembly; 201, servo motor; 202, two-way threaded rod; 203, fixed frame; 204, threaded bolt; 205, fixed plate; 206, L-shaped plate; 207, clamping block; 208, clamping hole; 209, insertion rod; 3, push cylinder; 301, connecting rod; 302, connecting plate; 303, fixed rod; 4, fixed bolt. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Referring to Figures 1-4 A mold locking mechanism of injection molding machine, including main plate 1, main plate 1 top fixedly connected with connecting frame 101, main plate 1 top fixedly connected with fixed die plate 102, connecting frame 101 side wall slidingly connected with movable die plate 103, main plate 1 inner wall is installed with fixed assembly 2, and fixed assembly 2 is used for fixing fixed die plate 102 and movable die plate 103, still include:

[0022] Fixed assembly 2 includes servo motor 201, servo motor 201 is fixedly installed on the side wall of main plate 1, servo motor 201 output fixedly connected with two-way threaded rod 202, both sides of two-way threaded rod 202 are screw-connected with sliding block, the top of the sliding block on the surface of main plate 1 is fixedly connected with fixed frame 203, and the top of fixed frame 203 is screw-connected with threaded bolt 204, and the bottom end of threaded bolt 204 is rotatably connected with fixed plate 205;

[0023] Movable die plate 103 top is clamped with L-shaped plate 206, and main plate 1 side wall is fixedly connected with clamping block 207, and L-shaped plate 206 can penetrate clamping block 207;

[0024] L-shaped plate 206 and clamping block 207 side wall are all provided with clamping hole 208, clamping block 207 side wall is slidingly connected with insertion rod 209, and insertion rod 209 can penetrate L-shaped plate 206 and clamping block 207;

[0025] It should be noted that: the movable mold plate 103 slides down, so that the movable mold plate 103 and the mold surface of the fixed mold plate 102 are matched with each other, at this time the L-shaped plate 206 clamped at the top of the movable mold plate 103 penetrates the clamping block 207 arranged on the side wall of the main plate 1, at this time the plug rod 209 is used to penetrate the clamping hole 208 opened in the side wall of the L-shaped plate 206 and the clamping block 207, the fixation between the movable mold plate 103 and the main plate 1 is completed, at the same time the servo motor 201 is driven, the servo motor 201 drives the bidirectional threaded rod 202 to rotate, the threaded connection between the bidirectional threaded rod 202 and the sliding block makes the sliding block drive the fixed frame 203 to slide to the middle, until the fixed frame 203 is attached to the side wall of the movable mold plate 103 and the fixed mold plate 102, at this time the threaded bolt 204 is rotated, the threaded bolt 204 drives the fixed plate 205 to slide down, the fixed plate 205 presses the movable mold plate 103, at this time the movable mold plate 103 is fixed by the fixed plate 205, the L-shaped plate 206 and the push air cylinder 3 around, so that when injection molding, the extrusion force received by the movable mold plate 103 can be evenly distributed, the deformation of the movable mold plate 103 caused by the extrusion force of the raw material can be avoided, and the L-shaped plate 206 can be detached from the top of the movable mold plate 103, which is convenient for replacing the mold.

[0026] With reference to Figures 1-4 The top of the connecting frame 101 is fixedly connected with the push air cylinder 3, and the piston rod at the end of the push air cylinder 3 penetrates the connecting frame 101 and is fixedly connected with the movable mold plate 103.

[0027] The connecting rod 301 is fixedly connected between the main plate 1 and the connecting frame 101, and the connecting plate 302 is slidingly connected with the connecting rod 301.

[0028] The fixed rod 303 is fixedly connected between the connecting plate 302 and the movable mold plate 103, and the fixed frame 203 is located between the fixed rods 303.

[0029] It should be noted that the piston rod at the end of the push air cylinder 3 pushes the movable mold plate 103 to slide down, and the connecting plate 302 connected with the fixed rod 303 on the side wall of the movable mold plate 103 will slide down on the side wall of the connecting rod 301, which can avoid the position of the movable mold plate 103 from shaking during the sliding process, so that the mold on the surface of the movable mold plate 103 and the fixed mold plate 102 cannot be clamped tightly.

[0030] With reference to Figures 1-4 The top of the L-shaped plate 206 is threadedly connected with the fixed bolt 4, and the fixed bolt 4 extends into the inner cavity of the movable mold plate 103 through the L-shaped plate 206.

[0031] The L-shaped plate 206 and the clamping block 207 are provided in multiple groups and one-to-one correspondence, and the mounting holes are arranged on the surfaces of the fixed mold plate 102 and the movable mold plate 103.

[0032] Need to explain: L type board 206 is installed on the top of movable template 103 through fixing bolt 4, convenient for its disassembly, and then replace movable template 103 and the surface of fixed mold plate 102, wherein L type board 206 and clamping block 207 are set one by one, convenient for the force of movable template 103 is evenly distributed.

[0033] Operation mode: the piston rod at the end of the push cylinder 3 pushes the movable template 103 to slide down, and the connecting plate 302 connected by the side wall fixing rod 303 of the movable template 103 will slide down on the side wall of the connecting rod 301, which can avoid the position of the movable template 103 from changing during sliding down, so that the mold on the surface of the movable template 103 and the fixed mold plate 102 cannot be clamped tightly, when the mold is clamped tightly, the L type plate 206 on the top of the movable template 103 penetrates the clamping block 207 arranged on the side wall of the main plate 1, at this time, the plug rod 209 penetrates the clamping hole 208 opened on the side wall of the L type plate 206 and the clamping block 207, and the fixing between the movable template 103 and the main plate 1 is completed.

[0034] At the same time, the servo motor 201 is driven, the servo motor 201 drives the bidirectional threaded rod 202 to rotate, the threaded connection between the bidirectional threaded rod 202 and the sliding block makes the sliding block drive the fixed frame 203 to slide to the middle, until the fixed frame 203 is attached to the side wall of the movable template 103 and the fixed mold plate 102, at this time, the threaded bolt 204 is rotated, the threaded bolt 204 drives the fixed plate 205 to slide down, the fixed plate 205 presses the movable template 103, at this time, the movable template 103 is fixed by the fixed plate 205, the L type plate 206 and the push cylinder 3, so that the extrusion force received by the movable template 103 can be evenly distributed when injection molding, which can avoid the deformation of the movable template 103 caused by the extrusion force of the raw material, and the L type plate 206 can be disassembled from the top of the movable template 103, which is convenient for replacing the mold.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine clamping mechanism comprising a main plate (1), characterized in that: The top of the main plate (1) is fixedly connected with a connecting frame (101), and the top of the main plate (1) is fixedly connected with a fixed mold plate (102), the side wall of the connecting frame (101) is slidably connected with a movable mold plate (103), and the inner wall of the main plate (1) is provided with a fixing assembly (2), which is used for fixing the fixed mold plate (102) and the movable mold plate (103), and further comprising: The fixing assembly (2) comprises a servo motor (201), which is fixedly installed on the side wall of the main plate (1), and the output end of the servo motor (201) is fixedly connected with a bidirectional threaded rod (202), the side walls on both sides of the bidirectional threaded rod (202) are threadedly connected with sliding blocks, the top of the sliding block on the surface of the main plate (1) is fixedly connected with a fixing frame (203), the top of the fixing frame (203) is threadedly connected with a threaded bolt (204), and the bottom end of the threaded bolt (204) is rotatably connected with a fixed plate (205).

2. A clamp mechanism for an injection molding machine as defined in claim 1, wherein: The top of the movable mold plate (103) is clamped with an L-shaped plate (206), the side wall of the main plate (1) is fixedly connected with a clamping block (207), and the L-shaped plate (206) can penetrate the clamping block (207).

3. A clamp mechanism for an injection molding machine as defined in claim 2, wherein: The side walls of the L-shaped plate (206) and the clamping block (207) are provided with clamping holes (208), the side wall of the clamping block (207) is slidably connected with a plug rod (209), and the plug rod (209) can penetrate the L-shaped plate (206) and the clamping block (207).

4. A clamp mechanism for an injection molding machine as defined in claim 3, wherein: The top of the connecting frame (101) is fixedly connected with a push air cylinder (3), and the piston rod at the end of the push air cylinder (3) penetrates the connecting frame (101) and is fixedly connected with the movable mold plate (103).

5. A clamp mechanism for an injection molding machine as defined in claim 4, wherein: The main plate (1) and the connecting frame (101) are fixedly connected with a connecting rod (301), and the connecting rod (301) is slidably connected with a connecting plate (302).

6. A clamp mechanism for an injection molding machine as defined in claim 5, wherein: The connecting plate (302) and the movable mold plate (103) are fixedly connected with a fixing rod (303), and the fixing frame (203) is located between the fixing rods (303).

7. A clamp mechanism for an injection molding machine as defined in claim 6, wherein: The top of the L-shaped plate (206) is threadedly connected with a fixing bolt (4), and the fixing bolt (4) extends into the inner cavity of the movable mold plate (103) through the L-shaped plate (206).

8. A clamp mechanism for an injection molding machine as defined in claim 7, wherein: The L-shaped plate (206) and the clamping block (207) are provided with a plurality of groups, and are one-to-one corresponding, and the surfaces of the fixed mold plate (102) and the movable mold plate (103) are provided with mounting holes.

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