A mold hot runner valve needle dismounting tool

Abstract

The utility model discloses a kind of mould hot runner valve needle dismounting tool, it is related to hot runner valve needle technical field, including mounting bracket, the mounting bracket top is provided with dismounting assembly, the clamping assembly that is clamped to valve needle is set in the mounting bracket, the adjusting assembly that is adjusted to clamping force is set in the clamping assembly, the mounting bracket outside is also provided with the fixed component that is fixed to mounting bracket;The adjusting assembly is provided with installation shell. The utility model is by being provided with clamping assembly, by threaded rod rotation, will drive moving block to carry out up-down linear motion, when moving block moves down, will pull the lower end of two second connecting arms and move downward simultaneously, after second connecting arm is pulled down, will promote connecting block to move outward, when subsequently drawing valve needle, force is purely upward tension, hardly produce any lateral bending force or torsional force, to fundamentally avoid the risk that valve needle is bent or broken due to uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of hot runner valve needle technology, specifically a tooling for disassembling hot runner valve needles in molds. Background Technology

[0002] In the field of plastic molds, hot runner systems are widely used due to their ability to save raw materials, improve product quality, and increase automation. The valve needle hot runner is an important form of this system, which uses the reciprocating motion of a valve needle to control the injection of molten plastic, thereby eliminating gate marks and improving injection precision.

[0003] The existing patent (authorization announcement number: CN219426116U) discloses a tooling for disassembling valve pins in a mold hot runner system. The key technical point of the solution is that the tooling is firmly connected to the mold body by the cooperation of the fixing block and the magnet. Even if the mold hot runner system fails to heat up or the valve pin assembly is stuck on the hot runner plate, the mold maintenance personnel can use the drive device to drive the lifting device, which will drive the valve pin connector to rise synchronously, thereby realizing the smooth extraction and disassembly of the valve pin without damaging it.

[0004] However, the above technical solutions still have certain defects. The fixing device directly contacts and rotates with the valve needle, which makes it easy for the twisting force to cause wear on the end groove of the valve needle. In addition, the surface of the valve needle is usually smooth, and general tools are difficult to provide stable and uniform clamping force. When a large torque is applied for disassembly, the tool is easy to slip. Therefore, a mold hot runner valve needle disassembly tool is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling for disassembling the valve pin of a mold hot runner, so as to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A tooling for disassembling a valve pin in a hot runner mold includes a mounting frame, a disassembly assembly on the top of the mounting frame, a clamping assembly for clamping the valve pin inside the mounting frame, an adjusting assembly for adjusting the clamping force inside the clamping assembly, and a fixing assembly for fixing the mounting frame outside the mounting frame. The adjustment assembly is provided with a mounting shell; The clamping assembly includes a first connecting arm rotatably mounted on the bottom of the mounting housing, a connecting block rotatably mounted on the end of the first connecting arm away from the mounting housing, a second connecting arm rotatably mounted on the end of the connecting block away from the first connecting arm, a movable block rotatably connected to the end of the second connecting arm away from the connecting block, and a clamp fixedly mounted on the bottom of the connecting block.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions: As a further embodiment of this utility model: the adjustment assembly further includes a second rotating handle fixedly connected to the top of the threaded rod, the second rotating handle being rotatably mounted on the mounting shell; the threaded rod has an axial cavity inside, a mounting post is fixed inside the cavity, a connector is slidably mounted on the mounting post, and the connector and the mounting post are connected by a spring.

[0008] As a further embodiment of this utility model: the disassembly and assembly assembly includes a locking block fixedly installed on the top of the threaded rod, a first rotating handle is sleeved on the locking block, and the first rotating handle is connected to the locking block by fasteners.

[0009] As a further improvement of this utility model, the fastener is a bolt.

[0010] As a further embodiment of this utility model: the fixing component includes a mounting base fixedly installed on one side of the mounting frame, a third rotating handle rotatably mounted on the mounting base, a connector rotatably mounted on the mounting base at the rotatable connection point with the third rotating handle, a fixing rod rotatably connected to the end of the connector away from the third rotating handle, and a sleeve fixedly provided on the mounting base, the fixing rod sliding within the sleeve.

[0011] As a further improvement of this utility model: the fixing components are provided in two sets, and both sets of fixing components are fixedly installed on the side wall of the mounting frame, and the fixing rod inside the fixing components passes through the mounting frame.

[0012] As a further improvement of this utility model: the first connecting arm, the connecting block, the second connecting arm, and the clamp are all mirror-arranged in two sets along the middle position of the long side of the moving block.

[0013] As a further improvement of this utility model, the clamp is coated with an anti-slip coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a clamping assembly, drives the moving block to move vertically by rotating the threaded rod. When the moving block moves downward, it pulls the lower ends of the two second connecting arms downward simultaneously. After the second connecting arms are pulled down, they push the connecting block outward. When the valve needle is pulled out laterally, the force is a purely upward pulling force, and almost no lateral bending or torsional force is generated, thus fundamentally avoiding the risk of the valve needle bending or breaking due to uneven force.

[0015] 2. By setting a fixing component, the mounting bracket is locked only by the end of the fixing rod. Locking or loosening can be completed by simply turning the handle, which improves the efficiency of equipment maintenance and reduces downtime. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping assembly of this utility model; Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model; Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a structural schematic diagram of the fixing component of this utility model.

[0017] Figure label annotations: 1. Mounting bracket; 2. Disassembly / reassembly assembly; 3. Adjustment assembly; 4. Clamping assembly; 5. Fixing assembly; 21. First rotating handle; 22. Locking block; 23. Fastener; 31. Second rotating handle; 32. Mounting housing; 33. Threaded rod; 34. Mounting post; 35. Spring; 36. Connector; 41. First connecting arm; 42. Connecting block; 43. Second connecting arm; 44. Clamp; 45. Moving block; 51. Mounting base; 52. Third rotating handle; 53. Connecting piece; 54. Sleeve; 55. Fixing rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] In one embodiment, such as Figures 1-5 As shown, a mold hot runner valve needle disassembly fixture includes a mounting frame 1, a disassembly assembly 2 is provided on the top of the mounting frame 1, a clamping assembly 4 for clamping the valve needle is provided inside the mounting frame 1, an adjusting assembly 3 for adjusting the clamping force is provided inside the clamping assembly 4, and a fixing assembly 5 for fixing the mounting frame 1 is also provided outside the mounting frame 1. In this embodiment, the tooling itself is fixed to the mold by the fixing component 5, providing a stable reaction force base and ensuring that the disassembly force will not cause the tool itself to move or wobble. The clamping component 4 and the adjusting component 3 are responsible for accurately gripping the valve needle. The adjusting component 3 allows for fine adjustment of the clamping force, providing sufficient friction while avoiding crushing or damaging the valve needle due to excessive clamping force. At the same time, the disassembly component 2 ensures that the pulling force is applied strictly along the axial direction of the valve needle.

[0020] In one embodiment, such as Figure 3 and Figure 4 As shown, the adjusting assembly 3 includes a mounting shell 32. The adjusting assembly 3 also includes a second rotating handle 31 fixedly connected to the top of the threaded rod 33. The second rotating handle 31 is rotatably mounted on the mounting shell 32. The threaded rod 33 has an axially formed cavity inside, within which a mounting post 34 is fixed. A connector 36 is slidably mounted on the mounting post 34, and the connector 36 is connected to the mounting post 34 by a spring 35. When the operator rotates the second rotating handle 31 clockwise, the second rotating handle 31 drives the threaded rod 33 to rotate. Since the threaded rod 33 and the moving block 45 are threadedly connected, the rotational motion is converted into… The downward linear movement of the threaded rod 33 (relative to the mounting housing 32) pushes the connector 36 at its bottom end downward. The connector 36 transmits force to the mounting post 34 through the spring 35. Due to the sufficient stiffness of the spring 35, the entire mechanism moves downward almost rigidly. At the same time, as the threaded rod 33 moves downward, it will continue to move downward a small distance, but the connector 36 remains stationary. As a result, the spring 35 is further compressed, absorbing this extra energy. When the torque is too large, it absorbs energy through its own deformation, protecting the threaded rod 33, connecting rod, and other transmission components from damage, and improving the reliability and service life of the tool.

[0021] In one embodiment, such as Figure 2 As shown, the clamping assembly 4 includes a first connecting arm 41 rotatably mounted on the bottom of the mounting housing 32. A connecting block 42 is rotatably mounted on the end of the first connecting arm 41 away from the mounting housing 32. A second connecting arm 43 is rotatably mounted on the end of the connecting block 42 away from the first connecting arm 41. A moving block 45 is rotatably connected to the end of the second connecting arm 43 away from the connecting block 42. A chuck 44 is fixedly mounted on the bottom of the connecting block 42. Two sets of the first connecting arm 41, connecting block 42, second connecting arm 43, and chuck 44 are mirror images of each other along the middle of the long side of the moving block 45. The chuck 44 is coated with an anti-slip coating. When the threaded rod 33 rotates, it drives the moving block 45 to move vertically. When the moving block 45 moves downward, it pulls the lower ends of the two second connecting arms 43 downward simultaneously. After the second connecting arms 43 are pulled down, they push the connecting block 42 outward. The connecting block 42 then drives the first connecting arm 41 to unfold outward. At this time, the distance between the two clamps 44 increases, and they are in the open state, which can be used to put on or release the valve needle. When the moving block 45 moves upward, the whole process is reversed. The two clamps 44 move towards the center simultaneously and evenly, clamping the valve needle located between them. When the valve needle is pulled out later, the force is a purely upward pulling force, and almost no lateral bending or torsional force is generated, thus fundamentally avoiding the risk of the valve needle bending or breaking due to uneven force.

[0022] In one embodiment, such as Figure 3As shown, the disassembly and assembly assembly 2 includes a locking block 22 fixedly mounted on the top of the threaded rod 33. A first rotating handle 21 is fitted onto the locking block 22, and the first rotating handle 21 and the locking block 22 are connected by a fastener 23, which is a bolt. The operator puts the first rotating handle 21 onto the locking block 22 and tightens the fastening bolt, so that the first rotating handle 21 and the locking block 22 are firmly locked together as a whole. At this time, the first rotating handle 21, the locking block 22, and the threaded rod 33 become a rigid body that can rotate synchronously. The operator holds both ends of the first rotating handle 21 and applies a rotational force in a counterclockwise direction. This torque is directly transmitted to the threaded rod 33 through the locking block 22, forcing the threaded rod 33 to rotate. Since the threaded rod 33 and the mounting bracket 1 are threadedly engaged, and the clamping mechanism at its bottom has clamped the valve needle, the resistance of the valve needle will prevent the threaded rod 33 from simply rotating with it. The threaded transmission has the characteristics of slowing down and increasing torque. Rotating the handle one full turn only raises the threaded rod by one pitch, but the output pulling force is amplified many times over. This allows the operator to generate a very large pulling force sufficient to overcome the frictional resistance of the valve needle with relatively little manual force.

[0023] In one embodiment, such as Figure 5 As shown, the fixing component 5 includes a mounting base 51 fixedly installed on one side of the mounting frame 1. A third rotating handle 52 is rotatably installed on the mounting base 51. A connector 53 is rotatably installed on the mounting base 51 at the rotatable connection point with the third rotating handle 52. A fixing rod 55 is rotatably connected to the end of the connector 53 away from the third rotating handle 52. A sleeve 54 is fixedly installed on the mounting base 51. The fixing rod 55 slides within the sleeve 54. The fixing component 5 has two sets, and both sets are fixedly installed on the side wall of the mounting frame 1. The fixing rod 55 in the fixing component 5 penetrates the mounting frame 1. By pressing down the third rotating handle 52, the connector 53 is pushed, and the connector 53 pushes the fixing rod 55 to extend linearly within the sleeve 54. The top end of the fixing rod 55 presses tightly against the mold platform, thereby locking the mounting frame 1 through the end of the fixing rod 55. Locking or loosening can be completed by simply turning the handle, which improves the efficiency of equipment maintenance and reduces downtime.

[0024] The above embodiment discloses a mold hot runner valve needle disassembly fixture, wherein the operator rotates the second rotating handle 31 clockwise, the second rotating handle 31 drives the threaded rod 33 to rotate, when the threaded rod 33 rotates, it drives the moving block 45 to move up and down linearly. When the moving block 45 moves down, it pulls the lower ends of the two second connecting arms 43 to move down simultaneously. After the second connecting arms 43 are pulled down, they push the connecting block 42 to move outward, and the connecting block 42 drives the first connecting arm 41 to unfold outward. At this time, the distance between the two clamps 44 increases, and they are in an open state, so that the valve needle can be put in or released. When the moving block 45 moves up, the whole process is reversed, the clamps 44 are closed, and the third rotating handle 52 is pressed down, pushing the connecting piece 53. The connecting piece 53 pushes the fixing rod 55 to extend linearly inside the sleeve 54. The top of the fixing rod 55 is pressed tightly against the mold platform, so as to lock the mounting bracket 1 through the end of the fixing rod 55.

[0025] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tooling for disassembling a hot runner valve pin in a mold, comprising a mounting bracket (1), wherein a disassembly assembly (2) is provided on the top of the mounting bracket (1), characterized in that, The mounting bracket (1) is provided with a clamping assembly (4) for clamping the valve needle, and the clamping assembly (4) is provided with an adjusting assembly (3) for adjusting the clamping force. The mounting bracket (1) is also provided with a fixing assembly (5) for fixing the mounting bracket (1) on the outside. The adjustment component (3) is provided with a mounting shell (32); The clamping assembly (4) includes a first connecting arm (41) rotatably mounted on the bottom of the mounting housing (32), a connecting block (42) rotatably mounted on one end of the first connecting arm (41) away from the mounting housing (32), a second connecting arm (43) rotatably mounted on one end of the connecting block (42) away from the first connecting arm (41), a moving block (45) rotatably connected to one end of the second connecting arm (43) away from the connecting block (42), and a chuck (44) fixedly mounted on the bottom of the connecting block (42).

2. The mold hot runner valve pin disassembly fixture according to claim 1, characterized in that, The adjustment assembly (3) further includes a second rotating handle (31) fixedly connected to the top of the threaded rod (33), the second rotating handle (31) being rotatably mounted on the mounting shell (32); the threaded rod (33) has an axial cavity inside, a mounting post (34) is fixed inside the cavity, a connector (36) is slidably mounted on the mounting post (34), and the connector (36) and the mounting post (34) are connected by a spring (35).

3. The mold hot runner valve pin disassembly fixture according to claim 1, characterized in that, The disassembly and assembly assembly (2) includes a locking block (22) fixedly installed on the top of the threaded rod (33), a first rotating handle (21) is sleeved on the locking block (22), and the first rotating handle (21) and the locking block (22) are connected by fasteners (23).

4. The mold hot runner valve pin disassembly fixture according to claim 3, characterized in that, The fastener (23) is a bolt.

5. The mold hot runner valve pin disassembly fixture according to claim 1, characterized in that, The fixing component (5) includes a mounting base (51) fixedly installed on one side of the mounting frame (1). A third rotating handle (52) is rotatably installed on the mounting base (51). A connector (53) is rotatably installed on the mounting base (51) at the rotatable connection point with the third rotating handle (52). A fixing rod (55) is rotatably connected to one end of the connector (53) away from the third rotating handle (52). A sleeve (54) is fixedly installed on the mounting base (51). The fixing rod (55) slides inside the sleeve (54).

6. The mold hot runner valve pin disassembly fixture according to claim 5, characterized in that, The fixing component (5) is provided in two sets, and both sets of fixing components (5) are fixedly installed on the side wall of the mounting frame (1), and the fixing rod (55) inside the fixing component (5) passes through the mounting frame (1).

7. The mold hot runner valve pin disassembly fixture according to claim 1, characterized in that, The first connecting arm (41), the connecting block (42), the second connecting arm (43), and the clamp (44) are all mirrored in two sets along the middle of the long side of the moving block (45).

8. The mold hot runner valve pin disassembly fixture according to claim 1, characterized in that, The chuck (44) is coated with an anti-slip coating.

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