Automobile die casting grabbing device

Abstract

The automobile die casting grabbing device comprises a die casting main body and a grabbing module, the die casting main body comprises a movable die and a fixed die, a material head connecting part is arranged at the bottom of the movable die, and a plurality of material ejecting needles are arranged in the middle of the movable die; a piston plate and a first piston cavity are arranged on the sides, away from the fixed die, of the multiple ejector pins, the multiple ejector pins are fixedly connected with the piston plate, a positioning groove is formed in the side, close to the grabbing module, of the stub bar connecting part, and a pushing piston and a second piston cavity are arranged in the positioning groove. The side, away from the fixed die, of the second piston cavity communicates with the side, away from the fixed die, of the first piston cavity, the grabbing module comprises a grabbing mechanical arm and a material head clamping jaw, and one side of the material head clamping jaw is connected with a positioning push block matched with the positioning groove. According to the device, the die-casting module is arranged, so that the clamping stability can be effectively improved, and a die casting is prevented from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of die casting, and particularly to a grasping device for automotive die castings. Background Art

[0002] The grasping device for automotive die castings is a key equipment in the die casting production line for quickly and stably extracting the formed parts from the mold. Through the coordinated action of machinery and pneumatics, it accurately completes the demolding and transfer tasks in a high-temperature and high-pressure environment. Traditional devices usually rely on the ejector pins on the moving mold to eject the cooled die castings out of the cavity, and then the pneumatic gripper clamps the sprue part and moves it out. The gripper grabs the sprue through a preset trajectory and uses its rigid connection characteristics to avoid direct contact with the surface of the casting, which can not only protect the product appearance but also adapt to high-speed production rhythms. This design significantly improves the automation efficiency of the die casting process by simplifying the operation process.

[0003] However, the insufficient positioning fault tolerance of the traditional gripper system often causes stability hazards. During the die casting process, the sprue may be offset to a certain extent when ejected by the ejector pins due to reasons such as changes in the equipment state. If the fixed path and closing accuracy of the gripper are not adapted in time, it is easy to have clamping offset or unbalanced force, which may lead to the casting shaking and hitting the mold in minor cases, or even cause the casting to fall due to grasping failure in severe cases, resulting in an increase in the scrap rate. Therefore, the die casting technology field needs to propose a grasping device for automotive die castings that can improve the clamping stability and avoid the dropping of die castings. Summary of the Invention

[0004] In view of the above-mentioned prior art, the present invention aims to provide a grasping device for automotive die castings, and the main technical problem to be solved is how to improve the clamping stability and avoid the dropping of die castings.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is realized as follows:

[0006] A grasping device for automotive die castings includes a die casting main body and a grasping module. The die casting main body includes a moving mold and a fixed mold. A sprue connection part is arranged at the bottom of the moving mold, and a plurality of ejector pins are arranged in the middle of the moving mold. A piston plate and a first piston cavity are arranged on the side of the plurality of ejector pins away from the fixed mold. The plurality of ejector pins are fixedly connected to the piston plate. A positioning groove is arranged on the side of the sprue connection part close to the grasping module. A pushing piston and a second piston cavity are arranged in the positioning groove. The second piston cavity is communicated with the side of the first piston cavity away from the fixed mold. The grasping module includes a grasping robotic arm and a sprue gripper. A positioning push block matched with the positioning groove is connected to one side of the sprue gripper.

[0007] Preferably, a spraying robotic arm and a release agent spray head are arranged above the die casting main body, and the release agent spray head is connected to the spraying robotic arm on one side.

[0008] Preferably, an air vent cavity is provided on one side of the first piston cavity close to the ejector pin. One side of the first piston cavity communicates with the air vent cavity through a first through hole, and the air vent cavity communicates with the outside through a second through hole.

[0009] Preferably, a pressure sensor is provided on one side of the first piston cavity close to the ejector pin.

[0010] Preferably, the sprue gripper includes a clamping portion and clamping teeth, and the clamping teeth are fixedly connected to the clamping portion.

[0011] Preferably, a pneumatic suction head is provided in the middle of the clamping teeth.

[0012] Preferably, a third piston cavity and a suction piston are provided on one side of the positioning push block. The positioning push block is fixedly connected to the suction piston. An electric telescopic rod is provided above the suction piston, and the third piston cavity communicates with the pneumatic suction head.

[0013] Preferably, the pneumatic suction head includes a contact head, a suction cavity and a spring. A negative pressure channel is provided in the middle of the contact head. The negative pressure channel communicates with the third piston cavity through the suction cavity, and the contact head is connected to the suction cavity through a spring.

[0014] Preferably, a connecting rod is provided at the connection between the negative pressure channel and the suction cavity. One side of the connecting rod is fixedly connected to the suction cavity, and the side of the connecting rod that is not fixedly connected to the suction cavity is slidably connected to the negative pressure channel. A T-shaped channel is provided in the middle of the connecting rod. One side of the T-shaped channel communicates with the suction cavity, and a spherical cavity is provided on the side of the negative pressure channel close to the T-shaped channel rod.

[0015] Preferably, a one-way valve is provided on one side of the third piston cavity.

[0016] The beneficial effects of the present invention are as follows: By providing the sprue gripper, after the die-casting of the die-cast part is completed, the sprue part can be clamped, and the die-cast part is taken out from the moving die in cooperation with the ejector pin. At the same time, the device is also provided with a positioning groove and a positioning push block. When the positioning push block is inserted into the positioning groove, the pushing piston slides in the second piston cavity, thereby changing the air pressure in the second piston cavity. And the second piston cavity is communicated with the first piston cavity, so that the piston plate is pushed out under pressure, and then drives the ejector pin to move to eject the die-cast part. When the positioning push block is fully pushed out, that is, when the die-cast part is fully pushed out, the control system controls the sprue gripper to clamp the sprue part of the die-cast part. Through the positioning groove and the positioning push block, the sprue part can be clamped in time when the die-cast part is pushed out, reducing the shaking and displacement of the sprue, and the ejector pin is pushed out by air pressure control, making the pushing action of the ejector pin softer and smoother, further reducing the shaking and displacement of the die-cast part, and making the clamping more stable and reliable.

[0017] In summary, by providing the die-casting module, the present application can effectively improve the stability of clamping and avoid the dropping of die-cast parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a device for grasping an automotive die-cast part in an embodiment of the present application;

[0019] Figure 2 It is a schematic structural diagram of the moving die in an embodiment of the present application;

[0020] Figure 3 It is a sectional view of the moving die in an embodiment of the present application;

[0021] Figure 4 It is a schematic structural diagram of the sprue gripper in an embodiment of the present application;

[0022] Figure 5 It is a sectional view of the sprue gripper in an embodiment of the present application;

[0023] Figure 6 It is an enlarged view of part A in an embodiment of the present application;

[0024] Explanation of the reference numerals in the drawings:

[0025] 1. Die-casting main body; 2. Grasping module;

[0026] 101. Moving die; 102. Fixed die; 103. Sprue connecting part; 104. Ejector pin; 105. Piston plate; 106. First piston cavity; 107. Positioning groove; 108. Pushing piston; 109. Second piston cavity;

[0027] 201. Gripping robotic arm; 202. Sprue gripper; 203. Positioning push block; 204. Spraying robotic arm; 205. Release agent spray head; 206. Ventilation cavity; 207. First through hole; 208. Second through hole; 209. Pressure sensor; 210. Clamping part; 211. Clamping teeth; 212. Pneumatic suction head; 213. Third piston cavity; 214. Suction piston; 215. Electric telescopic rod; 216. Contact head; 217. Suction cavity; 218. Spring; 219. Negative pressure channel; 220. Connecting rod; 221. T-shaped channel; 222. Spherical cavity; 223. Check valve Detailed implementation mode

[0028] The technical solution of the present invention will be further elaborated in detail below in conjunction with the specification drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is mentioned, which describes a subset of all possible embodiments. However, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0029] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "inner", "outer", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0030] Embodiment 1

[0031] Refer to the appendix Figures 1-3, this application provides a grasping device for automotive die-castings, which includes a die-casting main body 1 and a grasping module 2. The die-casting main body 1 includes a moving die 101 and a fixed die 102. A sprue connecting part 103 is arranged at the bottom of the moving die 101, and a number of ejector pins 104 are arranged in the middle of the moving die 101. On the side of a number of the ejector pins 104 away from the fixed die 102, there is a piston plate 105 and a first piston cavity 106. A number of the ejector pins 104 are fixedly connected to the piston plate 105. A positioning groove 107 is arranged on the side of the sprue connecting part 103 close to the grasping module 2. A pushing piston 108 and a second piston cavity 109 are arranged in the positioning groove 107. The second piston cavity 109 communicates with the side of the first piston cavity 106 away from the fixed die 102. The grasping module 2 includes a grasping robotic arm 201 and a sprue gripper 202. One side of the sprue gripper 202 is connected with a positioning push block 203 that cooperates with the positioning groove 107. By setting the sprue gripper 202, this device can grip the sprue part after the die-casting of the die-casting is completed, and cooperate with the ejector pins 104 to take out the die-casting from the moving die 101. At the same time, this device is also provided with a positioning groove 107 and a positioning push block 203. When the positioning push block 203 is inserted into the positioning groove 107, the pushing piston 108 slides in the second piston cavity 109, thereby changing the air pressure in the second piston cavity 109. And the second piston cavity 109 communicates with the first piston cavity 106, so that the piston plate 105 is pushed out under pressure, and then drives the ejector pins 104 to move to eject the die-casting. When the positioning push block 203 is fully pushed out, that is, when the die-casting is fully pushed out, the control system controls the sprue gripper 202 to grip the sprue part of the die-casting. Through the positioning groove 107 and the positioning push block 203, the sprue part can be gripped in time when the die-casting is pushed out, reducing the shaking and displacement of the sprue. And by controlling the ejection of the ejector pins 104 through air pressure, the ejection action of the ejector pins 104 is made more gentle and smooth, further reducing the shaking and displacement of the die-casting, making the gripping more stable and reliable. In summary, by setting the die-casting module, this device can effectively improve the stability of gripping and avoid the dropping of the die-casting.

[0032] Specifically, a spray robotic arm 204 and a release agent spray head 205 are arranged above the die-casting main body 1. One side of the release agent spray head 205 is connected to the spray robotic arm 204. By setting the spray robotic arm 204 and the release agent spray head 205, this device can spray the release agent on the moving die 101 and the fixed die, so that the die-casting can be taken out more smoothly.

[0033] Specifically, an air vent cavity 206 is provided on the side of the first piston cavity 106 close to the ejector pin 104. One side of the first piston cavity 106 is communicated with the air vent cavity 206 through a first through hole 207, and the air vent cavity 206 is communicated with the outside through a second through hole 208. By providing the air vent cavity 206, one side of the first piston cavity 106 is communicated with the outside, avoiding excessive internal air pressure from affecting the movement of the piston plate 105.

[0034] Specifically, a pressure sensor 209 is provided on the side of the first piston cavity 106 close to the ejector pin 104. By providing the pressure sensor 209, the device can monitor whether the piston plate 105 has moved sufficiently, that is, whether it has moved to the right to fit against the right side of the first piston cavity 106, so that the die-casting part is completely ejected. If it is not completely ejected, the operator can be informed in time and the release agent or equipment can be adjusted.

[0035] Embodiment 2

[0036] Refer to the attached Figures 1-6 , the difference between this embodiment and Embodiment 1 is that the sprue gripper 202 includes a clamping portion 210 and clamping teeth 211, and the clamping teeth 211 are fixedly connected to the clamping portion 210. The clamping teeth 211 can improve the clamping stability.

[0037] Specifically, an air pressure adsorption head 212 is provided in the middle of the clamping teeth 211. The air pressure adsorption head 212 enables the clamping teeth 211 to perform air pressure adsorption on the sprue part, thereby improving the clamping firmness.

[0038] Specifically, a third piston cavity 213 and an adsorption piston 214 are provided on one side of the positioning push block 203. The positioning push block 203 is fixedly connected to the adsorption piston 214. An electric telescopic rod 215 is provided above the adsorption piston 214, and the third piston cavity 213 is communicated with the air pressure adsorption head 212. By providing the third piston cavity 213 and the adsorption piston 214, the electric telescopic rod 215 can control the pushing and retracting of the positioning push block 203, and then control the air pressure in the third piston cavity 213 through the adsorption piston 214, and use the air pressure in the third piston cavity 213 to make the air pressure adsorption head 212 adsorb the sprue part.

[0039] Specifically, the air pressure suction head 212 includes a contact head 216, a suction cavity 217, and a spring 218. A negative pressure channel 219 is provided in the middle of the contact head 216. The negative pressure channel 219 communicates with the third piston cavity 213 through the suction cavity 217. The contact head 216 is connected to the suction cavity 217 through the spring 218. By providing the contact head 216, the suction cavity 217, and the spring 218, the clamping teeth 211 are brought into contact with the head portion of the workpiece and generate pressure, driving the contact head 216 to resist the thrust of the spring 218 and approach the suction cavity 217. Through the spring 218, the contact between the contact head 216 and the workpiece is made smoother, improving the clamping effect.

[0040] Specifically, a connecting rod 220 is provided at the connection between the negative pressure channel 219 and the suction cavity 217. One side of the connecting rod 220 is fixedly connected to the suction cavity 217, and the side of the connecting rod 220 that is not fixedly connected to the suction cavity 217 is slidably connected to the negative pressure channel 219. A T-shaped channel 221 is provided in the middle of the connecting rod 220. One side of the T-shaped channel 221 communicates with the suction cavity 217. A spherical cavity is provided on the side of the negative pressure channel 219 close to the rod of the T-shaped channel 221. By providing the connecting rod 220, when the contact head 216 is squeezed, the negative pressure channel 219 slides relative to the connecting rod 220, so that the T-shaped channel 221 communicates with the spherical cavity, and the negative pressure in the suction cavity 217 is transmitted to the negative pressure channel 219 for suction.

[0041] Preferably, a one-way valve 223 is provided on one side of the third piston cavity 213. The one-way valve 223 enables the third piston cavity 213 to discharge the internal gas but not to inhale gas from the outside, ensuring the normal operation of the third piston cavity 213 and the suction piston 214.

[0042] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An automotive die-casting part grasping device, comprising a die-casting main body (1) and a grasping module (2), characterized in that, The die-casting main body (1) includes a moving die (101) and a fixed die (102). A sprue connecting part (103) is arranged at the bottom of the moving die (101). A plurality of ejector pins (104) are arranged in the middle of the moving die (101). A piston plate (105) and a first piston cavity (106) are arranged on the side of the plurality of ejector pins (104) away from the fixed die (102). The plurality of ejector pins (104) are fixedly connected to the piston plate (105). A positioning groove (107) is arranged on the side of the sprue connecting part (103) close to the grasping module (2). A pushing piston (108) and a second piston cavity (109) are arranged in the positioning groove (107). The second piston cavity (109) communicates with the side of the first piston cavity (106) away from the fixed die (102). The grasping module (2) includes a grasping robotic arm (201) and a sprue gripper (202). A positioning push block (203) matched with the positioning groove (107) is connected to one side of the sprue gripper (202).

2. The grasping device for automotive die-castings according to claim 1, characterized in that, A spray robotic arm (204) and a release agent spray head (205) are arranged above the die-casting main body (1). One side of the release agent spray head (205) is connected to the spray robotic arm (204).

3. The grasping device for automotive die-castings according to claim 1, wherein, An air vent cavity (206) is arranged on the side of the first piston cavity (106) close to the ejector pins (104). One side of the first piston cavity (106) communicates with the air vent cavity (206) through a first through hole (207). The air vent cavity (206) communicates with the outside through a second through hole (208).

4. A grasping device for automotive die-castings according to claim 1, characterized in that, A pressure sensor (209) is arranged on the side of the first piston cavity (106) close to the ejector pins (104).

5. The grasping device for automotive die-castings according to claim 1, wherein, The sprue gripper (202) includes a clamping part (210) and clamping teeth (211). The clamping teeth (211) are fixedly connected to the clamping part (210).

6. The grasping device for automotive die-castings according to claim 5, characterized in that, An air pressure adsorption head (212) is arranged in the middle of the clamping teeth (211).

7. The grasping device for automotive die-castings according to claim 6, characterized in that, A third piston cavity (213) and an adsorption piston (214) are arranged on one side of the positioning push block (203). The positioning push block (203) is fixedly connected to the adsorption piston (214). An electric telescopic rod (215) is arranged above the adsorption piston (214). The third piston cavity (213) communicates with the air pressure adsorption head (212).

8. The grasping device for automotive die-castings according to claim 7, wherein, The air pressure adsorption head (212) includes a contact head (216), an adsorption cavity (217), and a spring (218). A negative pressure channel (219) is arranged in the middle of the contact head (216). The negative pressure channel (219) communicates with the third piston cavity (213) through the adsorption cavity (217). The contact head (216) is connected to the adsorption cavity (217) through the spring (218).

9. The automotive die-casting part grasping device according to claim 8, wherein, A connecting rod (220) is provided at the connection between the negative pressure channel (219) and the adsorption cavity (217). One side of the connecting rod (220) is fixedly connected to the adsorption cavity (217), and the side of the connecting rod (220) that is not fixedly connected to the adsorption cavity (217) is slidably connected to the negative pressure channel (219). A T-shaped channel (221) is provided in the middle of the connecting rod (220). One side of the T-shaped channel (221) communicates with the adsorption cavity (217), and a spherical cavity is provided on the side of the negative pressure channel (219) close to the rod of the T-shaped channel (221).

10. The grasping device for automotive die-castings according to claim 9, wherein, A one-way valve (223) is provided on one side of the third piston cavity (213).

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