Automatic part taking device for injection molding machine

Abstract

This utility model relates to the field of plastic processing equipment technology and discloses an automatic part-retrieving device for injection molding machines. It aims to solve the problems of existing part-retrieving devices that easily damage workpieces due to rigid clamping and poor adaptability. The device includes a support frame, an injection molding machine, a robotic arm, and an adjustment mechanism located at the end of the robotic arm. The adjustment mechanism includes a support shell, a slidable clamping pad within the support shell, a fixing ring, a connecting block, a first rotating arm, a second rotating arm, a sliding ring, and a reset assembly. When the clamping pad is pressed, it drives the sliding ring to move. The sliding ring drives the connecting block through the second rotating arm, thereby causing the spring in the reset assembly to generate an elastic restoring force. Through the above structure, this utility model can automatically adjust the clamping force according to the actual contour and hardness of the part, achieving flexible adaptive clamping. This effectively avoids part deformation or damage caused by improper clamping force, improves gripping stability and product qualification rate, and the integrated cleaning function enhances the level of automation.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing equipment technology, and in particular to an automatic part removal device for injection molding machines. Background Technology

[0002] In the field of injection molding, in order to improve production efficiency and automation, automated equipment such as robotic arms are commonly used to grab molded parts from injection molding molds. These robotic arms are usually equipped with pneumatic or electric grippers at the end, which can grip and transfer parts through simple opening and closing actions.

[0003] The stroke and clamping force of these grippers are usually preset, which is a rigid clamping method. However, in actual production, especially when dealing with injection molded parts that are complex in shape, thin-walled and easily damaged, or have dimensional tolerances due to process fluctuations, the drawbacks of this rigid clamping become apparent. If the preset clamping force is too large, it can easily cause scratches, indentations, or even deformation and damage to the surface of the parts, affecting product quality. If the clamping force is set too small to avoid damage, the parts will fall off during high-speed transfer due to unstable clamping, causing production interruption. Ultimately, the grippers of existing part-removing devices lack the ability to adapt to different parts and cannot automatically adjust the clamping force according to the actual contour and hardness of the parts, thus affecting the stability of part removal and the product qualification rate.

[0004] Therefore, this utility model proposes an automatic part removal device for injection molding machines to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the existing technology, the automatic part-removing device for injection molding machines uses a rigid clamping method, which makes it difficult to automatically adjust the clamping force according to the actual contour and hardness of the part, and poses the risk of unstable clamping or damage to the workpiece. The present invention aims to provide an automatic part-removing device for injection molding machines with an improved structure that can effectively solve the above problems.

[0006] This utility model provides an automatic part removal device for injection molding machines, including: a support frame, a robotic arm, an adjustment mechanism, and an injection molding machine. The adjustment mechanism includes a support shell, a clamping pad, and a fixing ring; as well as a connecting block, a rotating arm one, a rotating arm two, a sliding ring, and a reset assembly.

[0007] The clamping pad, sliding ring, rotating arm 2, connecting block and reset assembly constitute a set of mechanical linkage mechanism.

[0008] Furthermore, the clamping pad, sliding ring, rotating arm two, rotating arm one, connecting block, fixed ring, and reset assembly are combined in the following way: when the clamping pad is compressed, it drives the sliding ring to move, and the sliding ring drives the connecting block to move through rotating arm two, thereby causing the reset assembly to generate elastic restoring force. At the same time, one end of rotating arm one is hinged to the fixed ring, and the other end is hinged to the connecting block. This linkage combination method achieves adaptive clamping.

[0009] Preferably, the reset assembly includes a limiting rod, a spring, and a sliding block, with the connecting block slidably sleeved on the limiting rod, and the spring connected between the connecting block and the sliding block.

[0010] Preferably, the adjusting mechanism further includes a fixed rod and a sliding groove, with a sliding block disposed in the sliding groove and capable of sliding along the axial direction of the fixed rod.

[0011] Preferably, the injection molding machine also includes a protective housing and a cleaning mechanism disposed on the protective housing.

[0012] Preferably, the cleaning mechanism includes a motor, a gear connected to the motor drive, a rack meshing with the gear, and a nozzle fixed to the rack.

[0013] Preferably, the cleaning mechanism also includes a control unit for controlling the start and stop of the motor.

[0014] Preferably, the cleaning mechanism further includes a second slide, a support rod, and a right-angle block; the rack can reciprocate along the second slide, the right-angle block is fixed to the rack and slidably engaged with the support rod, and the nozzle is installed on the right-angle block.

[0015] Preferably, the cleaning mechanism also includes a second spring, one end of which is connected to the protective shell and the other end to the right-angle block.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting an adjustment mechanism composed of a clamping pad, a linkage mechanism and a spring, can generate an elastic restoring force by linking the spring when the gripper is pressed. This solves the problem in the prior art that the rigid clamping device is prone to deformation or damage to parts with complex shapes or dimensional deviations due to improper clamping force when gripping them. It achieves the technical effect of automatically adjusting the clamping force according to the shape of the part and realizing flexible adaptive clamping, thereby effectively protecting the part, improving the gripping success rate and the applicability of the device.

[0018] 2. This utility model solves the problem in the prior art that the impurities generated by injection molding molds during the production process need to be cleaned manually or with additional equipment, resulting in low automation and affecting production continuity. It achieves the technical effect of automatically cleaning the mold during the part removal cycle, reducing manual intervention, effectively ensuring product quality and improving overall production efficiency.

[0019] 3. This utility model integrates the adaptive clamping mechanism with the automatic cleaning mechanism, and sets up guiding and buffering structures for the moving parts of the cleaning mechanism. This solves the problems of single function, low integration and poor motion stability of the existing picking device. It achieves the technical effect of compact structure, high functional integration and stable and reliable operation, and enhances the overall performance of the device on the automated production line. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an automatic part-removing device for an injection molding machine proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the protective shell of an automatic part-removing device for an injection molding machine proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the support shell for an automatic part-removing device for an injection molding machine proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sliding block of an automatic part-removing device for an injection molding machine proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the second slide of an automatic part-removing device for an injection molding machine proposed in this utility model;

[0025] Figure 6 This is a schematic diagram of the right-angled block of an automatic part-removing device for injection molding machines proposed in this utility model;

[0026] Figure 7 This is a schematic diagram of the support rod of an automatic part-removing device for an injection molding machine proposed in this utility model.

[0027] Legend:

[0028] 1. Support frame; 2. Robotic arm; 3. Adjustment mechanism; 31. Support shell; 32. Clamping pad; 33. Fixing ring; 34. Fixing rod; 35. Rotating arm one; 36. Connecting block; 37. Rotating arm two; 38. Sliding ring; 39. Reset assembly; 391. Limiting rod; 392. Spring one; 393. Sliding block; 394. Slide one; 4. Injection molding machine; 5. Protective shell; 6. Cleaning mechanism; 61. Slide two; 62. Motor; 63. Gear; 64. Rack; 65. Right-angle block; 66. Nozzle; 67. Support rod; 68. Spring two; 7. Control components. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example:

[0031] Please refer to Figures 1 to 7 This utility model provides an automatic part removal device for injection molding machines, which aims to solve the problems of existing part removal devices that easily damage workpieces due to rigid clamping and mold cleaning that relies on manual labor or additional equipment.

[0032] like Figure 1 and Figure 2 As shown, the automatic part-retrieving device for the injection molding machine includes a support frame 1, a robotic arm 2 mounted on the support frame 1, an adjustment mechanism 3 located at the end of the robotic arm 2, an injection molding machine 4, a protective shell 5 mounted on the rear side of the injection molding machine 4, a cleaning mechanism 6 located on the protective shell 5, and a control component 7 for controlling the cleaning mechanism 6. The support frame 1 provides the mounting base for the entire device, and the robotic arm 2 drives the adjustment mechanism 3 to move in order to perform the part-retrieving action.

[0033] To solve the above-mentioned technical problems, the core of the technical solution in this embodiment lies in the internal structure design of the adjustment mechanism 3, which converts the reaction force during clamping into the elastic potential energy of the spring through the linkage of multiple components, thereby achieving adaptive clamping.

[0034] Please refer to the following carefully. Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 The core structure of the adjustment mechanism 3 will be described in detail below:

[0035] The adjusting mechanism 3 includes a support shell 31, a clamping pad 32, a fixing ring 33, a fixing rod 34, a first rotating arm 35, a connecting block 36, a second rotating arm 37, a sliding ring 38, and a reset assembly 39. The clamping pad 32 is slidably disposed inside the support shell 31. The clamping pad 32 drives the sliding ring 38 to move axially along the fixing rod 34. The second rotating arm 37 is hinged to the sliding ring 38, and the other end of the second rotating arm 37 is hinged to the connecting block 36. One end of the first rotating arm 35 is hinged to the fixing ring 33, and the other end... Hinged to the connecting block 36, the reset assembly 39 includes a limiting rod 391, a spring 392, and a sliding block 393. The connecting block 36 is slidably sleeved on the limiting rod 391, and the sliding block 393 is disposed in the sliding groove 394 and can slide along the axial direction of the fixed rod 34. The two ends of the spring 392 are fixedly connected to the connecting block 36 and the sliding block 393, respectively. Through this combination structure of connecting rod and spring, it is ensured that the device can dynamically compensate for dimensional deviations and provide stable clamping force when clamping different workpieces.

[0036] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0037] As a preferred embodiment, to achieve automated cleaning of injection molding machine molds, please refer to... Figure 2 , Figure 5 , Figure 6 and Figure 7 The cleaning mechanism 6 includes a second slide 61, a motor 62, a gear 63, a rack 64, a right-angle block 65, a nozzle 66, a support rod 67, and a second spring 68. The motor 62 is fixedly installed inside the protective shell 5. The output shaft of the motor 62 is connected to the gear 63. The gear 63 and the rack 64 mesh with each other. The rack 64 can reciprocate linearly along the second slide 61. The right-angle block 65 is fixedly connected to the rack 64 and slides on the support rod 67. The nozzle 66 is installed on the right-angle block 65 and moves synchronously with it. One end of the second spring 68 is fixedly connected to the inner wall of the protective shell 5, and the other end is fixedly connected to the right-angle block 65.

[0038] The working principle is as follows:

[0039] When the robotic arm 2 grips the part, the clamping pad 32 contacts and is pressed against the surface of the part, then slides along the inner wall of the support shell 31, thereby pushing the sliding ring 38 to move. The sliding ring 38 pulls the connecting block 36 along the limiting rod 391 via the rotating arm 37. This action stretches the spring 392, and the stretched spring 392 generates an elastic restoring force. This force acts in the opposite direction on the clamping pad 32 through the connecting block 36, the rotating arm 37, and the sliding ring 38, forming an adaptive clamping force on the part. At the same time, the sliding of the connecting block 36 drives the rotating arm 35 to rotate around the fixed ring 33 to stabilize its movement. After the part is picked up, the restoring force of spring 392 drives each component to move in the opposite direction to reset. When cleaning is required, the control component 7 starts the motor 62. The motor 62 drives the gear 63 to rotate. The gear 63 drives the rack 64 meshing with it to move up and down in the slide groove 61. The rack 64 drives the right-angle block 65 and the nozzle 66 fixed on it to move synchronously along the support rod 67. The nozzle 66 sprays gas to clean the mold during the movement. Spring 68 provides buffering and assists in reset during this process. Through the above synergistic effect, this utility model effectively solves the problems of clamping damage and manual cleaning.

Claims

1. An automatic part-removing device for an injection molding machine, comprising a support frame (1), a robotic arm (2) mounted on the support frame (1), an adjustment mechanism (3) disposed at the end of the robotic arm (2), and an injection molding machine (4); the adjustment mechanism (3) comprises a support shell (31), a clamping pad (32) slidably disposed in the support shell (31), and a fixing ring (33). Its features are, The adjustment mechanism (3) also includes a connecting block (36), a rotating arm one (35), a rotating arm two (37), a sliding ring (38), and a reset assembly (39). One end of the rotating arm (35) is hinged to the fixed ring (33), and the other end is hinged to the connecting block (36). When the clamping pad (32) is pressed, it drives the sliding ring (38) to move. The sliding ring (38) drives the connecting block (36) to move through the rotating arm (37), thereby causing the reset assembly (39) to generate an elastic restoring force applied to the connecting block (36).

2. The automatic part removal device for injection molding machines according to claim 1, characterized in that, The reset assembly (39) includes a limiting rod (391), a spring (392), and a sliding block (393); the connecting block (36) is slidably sleeved on the limiting rod (391), and the spring (392) is connected between the connecting block (36) and the sliding block (393).

3. The automatic part removal device for injection molding machines according to claim 2, characterized in that, The adjustment mechanism (3) further includes a fixed rod (34) and a sliding groove (394). The sliding block (393) is located in the sliding groove (394) and can slide along the axial direction of the fixed rod (34).

4. The automatic part removal device for injection molding machines according to claim 1, characterized in that, The injection molding machine (4) also includes a protective shell (5) and a cleaning mechanism (6) disposed on the protective shell (5).

5. The automatic part removal device for injection molding machines according to claim 4, characterized in that, The cleaning mechanism (6) includes a motor (62), a gear (63) that is connected to the motor (62) for transmission, a rack (64) that meshes with the gear (63) and a nozzle (66) fixed on the rack (64).

6. The automatic part removal device for injection molding machines according to claim 5, characterized in that, The cleaning mechanism (6) also includes a control unit (7) for controlling the start and stop of the motor (62).

7. The automatic part removal device for injection molding machines according to claim 5, characterized in that, The cleaning mechanism (6) also includes a second slide (61), a support rod (67) and a right-angle block (65); the rack (64) can reciprocate along the second slide (61), the right-angle block (65) is fixed to the rack (64) and slidably engaged with the support rod (67), and the nozzle (66) is installed on the right-angle block (65).

8. The automatic part removal device for injection molding machines according to claim 7, characterized in that, The cleaning mechanism (6) also includes a second spring (68), one end of which is connected to the protective shell (5) and the other end is connected to the right-angle block (65).

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