Mold locking mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses an injection molding machine mold locking mechanism which comprises a placing box, supporting legs are fixedly connected to the four corners of the lower surface of the placing box, limiting mechanisms are arranged on the left side and the right side of the placing box, and an ejection mechanism is arranged below the placing box. A pressing mechanism is arranged above the placing box, the pressing mechanism comprises four sliding rods, and the bottoms of the four sliding rods are fixedly connected to the four corners of the upper surface of the placing box respectively. Sliding rods are connected to the four corners of the upper surface of a containing box, second extension springs are arranged outside the sliding rods in a sleeving mode, the four sliding rods penetrate through the four corners of a pressing plate respectively, the pressing plate can elastically move up and down above the containing box through the sliding rods, and a third piston rod is connected with the pressing plate. And the third cylinder drives the pressing plate to move up and down through a third piston rod at the bottom, so that the effect of improving the stability of the device in the mold locking process can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a mold locking mechanism for an injection molding machine. Background Art

[0002] An injection molding machine is a piece of mechanical equipment used to produce various plastic products. Its working principle is to heat the plastic raw material to a molten state, then inject it into a closed mold under pressure, and then cool and solidify it in the mold to form the desired shape. Injection molding machines are widely used in many industries such as automobiles, electronics, packaging, and toys.

[0003] At present, the position of the injection port of the injection molding machine is fixed, but the sizes of the injection molds are different. The movable push plate pushes the mold body to the surface of the fixed plate for limiting. It can only adapt to part of the mold body and cannot adapt to injection molds of different lengths and widths. The opening positions of some injection molds are different. When they are pushed to the surface of the fixed plate for locking, the opening of the injection mold cannot be aligned with the top injection port, and the practicality of the injection molding machine's clamping mechanism is poor.

[0004] The prior art (publication number CN220534844U) discloses a locking mechanism for an injection molding machine. This technical solution cooperates with a first adjusting device, a second adjusting device, a first limiting device, and a second limiting device to move the openings of molds of different lengths and widths to the bottom of the injection hole, and also maintains the stability of the mold during injection molding. The device has a simple structure and strong practicality. It can quickly limit molds of different lengths and widths, and adapt to molds of different lengths and widths for injection molding, thereby improving the practicality and adaptability of the locking mechanism of the injection molding machine. However, the traditional locking mechanism of the injection molding machine has problems such as slow response speed and high energy consumption during operation, especially under high-speed operation, the instability and energy consumption problems during the locking process are more prominent. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a clamping mechanism for an injection molding machine, which has the advantages of improving the stability of the device during the clamping process, and solves the problems mentioned in the above background technology.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking mechanism of an injection molding machine, comprising a placing box, wherein the four corners of the lower surface of the placing box are fixedly connected with supporting legs, the left and right sides of the placing box are provided with a limiting mechanism, a ejection mechanism is provided under the placing box, and a pressing mechanism is provided above the placing box, wherein the pressing mechanism includes a sliding rod, and the number of the sliding rods is four, and the bottoms of the four sliding rods are respectively fixedly connected to the four corners of the upper surface of the placing box, a second tension spring is provided below the outer bottom of the sliding rod, a pressure plate is provided above the outer top of the sliding rod, the lower surface of the pressure plate is fixedly connected with a rubber plate, the top of the sliding rod is fixedly connected to a fixing plate, the four corners of the upper surface of the fixing plate are fixedly connected to support rods, the top of the support rod is fixedly connected to a top plate, a third cylinder is fixedly installed in the middle of the lower surface of the top plate, and a third piston rod is provided at the bottom of the third cylinder.

[0009] Preferably, the limiting mechanism includes two slide grooves, and the two slide grooves are respectively opened in the middle of the front and the middle of the back of the placement box. Sliders are provided on the left and right sides of the inside of the slide groove, one end of the slider is fixedly connected to the limiting plate, and the other end of the slider is fixedly connected to the splint.

[0010] The two slides run through the middle of the front and back of the placement box respectively. The two sliders on the same side form a group and slide horizontally inside the slide. The limit plate limits one side of the slider. The splint can move horizontally inside the placement box through the slider, and can be moved and adjusted for molds of different sizes.

[0011] Preferably, a placement plate is fixedly connected to the lower middle part of the left and right sides of the placement box, a first cylinder is fixedly installed on the upper surface of the placement plate, a first piston rod is provided at one end of the first cylinder, and a first tension spring is provided on the outside of the first piston rod.

[0012] The upper surface of the placement plate is supported by a first cylinder, a first tension spring is sleeved on the outside of the first piston rod, and the first cylinder drives the clamping plate to move horizontally elastically through the first piston rod to clamp and fix the mold.

[0013] Preferably, the ejection mechanism includes a placement groove, the placement groove is opened in the middle of the inner bottom of the placement box, and a through hole is opened in the middle of the inner bottom of the placement groove.

[0014] Preferably, a placement rack is fixedly connected to the middle portion of the lower surface of the placement box, and a second cylinder is fixedly installed on the inner bottom of the placement rack.

[0015] Preferably, a second piston rod is provided on the top of the second cylinder, and a top plate is fixedly connected to the top of the second piston rod.

[0016] The placement groove is embedded in the middle of the inner bottom of the placement box, the through hole passes through the middle of the inner bottom of the placement groove, the top plate can be placed inside the placement groove, the second piston rod passes through the inside of the through hole, and the placement frame is used to install the second cylinder. The second cylinder drives the top plate to move up and down through the second piston rod at the top to eject the mold inside the placement box.

[0017] Compared with the prior art, the present invention provides a clamping mechanism for an injection molding machine, which has the following beneficial effects:

[0018] 1. The utility model has sliding rods connected to the four corners of the upper surface of the placement box, and the second tension spring is sleeved on the outside of the sliding rods. The four sliding rods respectively penetrate the four corners of the pressure plate. The pressure plate can elastically move up and down above the placement box through the sliding rods. The third piston rod and the pressure plate are connected to each other. The third cylinder drives the pressure plate to move up and down through the third piston rod at the bottom, thereby achieving the effect of improving the stability of the device during the clamping process.

[0019] 2. The utility model has a placement slot opened in the middle of the bottom of the placement box, a through hole runs through the middle of the bottom of the placement slot, the second piston rod passes through the inside of the through hole, and the second cylinder drives the top plate to move up and down through the second piston rod on the top, so that it is convenient for the operator to eject and take out the mold in the placement box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the placement box of the utility model from top view;

[0023] Figure 4 This is a schematic diagram of the ejection mechanism structure of the utility model.

[0024] Among them: 1. Placement box; 101. Support leg; 2. Limiting mechanism; 201. Slide groove; 202. Slider; 203. Limiting plate; 204. Clamp; 205. Placement plate; 206. First cylinder; 207. First piston rod; 208. First tension spring; 3. Ejection mechanism; 301. Placement groove; 302. Through hole; 303. Placement rack; 304. Second cylinder; 305. Second piston rod; 306. Top plate; 4. Pressing mechanism; 401. Slide rod; 402. Second tension spring; 403. Pressing plate; 404. Rubber plate; 405. Fixing plate; 406. Support rod; 407. Top plate; 408. Third cylinder; 409. Third piston rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 , a locking mechanism for an injection molding machine, comprising a placing box 1, wherein the four corners of the lower surface of the placing box 1 are fixedly connected with supporting legs 101, the left and right sides of the placing box 1 are provided with limiting mechanisms 2, the lower part of the placing box 1 is provided with an ejection mechanism 3, the upper part of the placing box 1 is provided with a pressing mechanism 4, the pressing mechanism 4 comprises a sliding rod 401, the number of the sliding rod 401 is four, the bottoms of the four sliding rods 401 are respectively fixedly connected to the four corners of the upper surface of the placing box 1, a second tension spring 402 is provided at the lower part of the outside of the sliding rod 401, a pressing plate 403 is provided above the outside of the sliding rod 401, the lower surface of the pressing plate 403 is fixedly connected with a rubber plate 404, the top of the sliding rod 401 is fixedly connected with a fixing plate 405, the four corners of the upper surface of the fixing plate 405 are fixedly connected with support rods 406, the top of the support rod 406 is fixedly connected with a top plate 407, and the middle part of the lower surface of the top plate 407 is fixedly installed with a third cylinder 408. The bottom of 8 is provided with a third piston rod 409. The interior of the placement box 1 is used to place the mold, and the support legs 101 support the placement box 1. The bottoms of the four slide bars 401 are fixedly connected to the four corners of the upper surface of the placement box 1. The second tension spring 402 is sleeved on the outside of the slide bar 401. The four slide bars 401 respectively pass through the four corners of the pressure plate 403, so that the pressure plate 403 can slide elastically up and down above the placement box 1. The rubber plate 404 can improve the safety between the pressure plate 403 and the mold. The tops of the four slide bars 401 are respectively vertically connected to the four corners of the lower surface of the fixed plate 405, and the bottoms of the four support rods 406 are respectively vertically connected to the four corners of the lower surface of the top plate 407. The third piston rod 409 passes through the inner middle part of the fixed plate 405 and is connected to the pressure plate 403. The third cylinder 408 drives the pressure plate 403 to move up and down through the third piston rod 409 at the bottom to press and lock the mold.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, the limiting mechanism 2 includes a slide groove 201, and there are two slide grooves 201. The two slide grooves 201 are respectively opened in the middle of the front and the middle of the back of the placement box 1. Sliders 202 are provided on the left and right sides of the slide groove 201. One end of the slider 202 is fixedly connected to the limiting plate 203, and the other end of the slider 202 is fixedly connected to the splint 204.

[0028] Through the above technical solution, the two slide grooves 201 respectively pass through the middle of the front and the middle of the back of the placement box 1, and the two sliders 202 on the same side are a group, which slide horizontally inside the slide groove 201. The limit plate 203 limits one side of the slider 202, and the splint 204 can move horizontally inside the placement box 1 through the slider 202, and can be moved and adjusted for molds of different sizes.

[0029] Specifically, such as Figure 2 and Figure 3 As shown, a placement plate 205 is fixedly connected to the lower middle part of the left and right sides of the placement box 1, and a first cylinder 206 is fixedly installed on the upper surface of the placement plate 205. A first piston rod 207 is provided at one end of the first cylinder 206, and a first tension spring 208 is provided on the outside of the first piston rod 207.

[0030] Through the above technical solution, the upper surface of the placement plate 205 is supported by the first cylinder 206, the first tension spring 208 is sleeved on the outside of the first piston rod 207, and the first cylinder 206 drives the clamping plate 204 to move horizontally elastically through the first piston rod 207 to clamp and fix the mold.

[0031] Specifically, such as Figure 4 As shown, the ejection mechanism 3 includes a placement groove 301, which is opened in the middle of the inner bottom of the placement box 1. A through hole 302 is opened in the middle of the inner bottom of the placement groove 301. A placement rack 303 is fixedly connected to the middle of the lower surface of the placement box 1. A second cylinder 304 is fixedly installed on the inner bottom of the placement rack 303. A second piston rod 305 is provided on the top of the second cylinder 304. The top of the second piston rod 305 is fixedly connected to a top plate 306.

[0032] Through the above technical solution, the placement groove 301 is embedded in the middle of the inner bottom of the placement box 1, the through hole 302 passes through the middle of the inner bottom of the placement groove 301, the top plate 306 can be placed inside the placement groove 301, the second piston rod 305 passes through the inside of the through hole 302, and the placement frame 303 is used to install the second cylinder 304. The second cylinder 304 drives the top plate 306 to move up and down through the second piston rod 305 at the top to eject the mold inside the placement box 1.

[0033] During use, the operator places the mold between the two clamps 204 inside the placement box 1, starts the first cylinder 206, and the first cylinder 206 drives the clamp 204 to move through the first piston rod 207 to clamp the mold, and starts the third cylinder 408 at the top. The third cylinder 408 drives the bottom pressure plate 403 to move downward through the third piston rod 409 at the bottom, presses the top of the mold, and locks it. After the operation is completed, the pressure plate 403 is raised, the two clamps 204 are released, and the second cylinder 304 is started. The second cylinder 304 drives the top plate 306 to move upward through the second piston rod 305 at the top to eject the mold.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for an injection molding machine, comprising a placement box, characterized in that: The four corners of the lower surface of the placement box are fixedly connected with supporting legs, and limited mechanisms are provided on the left and right sides of the placement box, an ejection mechanism is provided under the placement box, and a pressing mechanism is provided above the placement box, and the pressing mechanism includes a sliding rod, and the number of the sliding rods is four, and the bottoms of the four sliding rods are respectively fixedly connected to the four corners of the upper surface of the placement box, a second tension spring is provided below the outer side of the sliding rod, a pressure plate is provided above the outer side of the sliding rod, and the lower surface of the pressure plate is fixedly connected to a rubber plate, and the top of the sliding rod is fixedly connected to a fixing plate, and the four corners of the upper surface of the fixing plate are fixedly connected to support rods, and the top of the support rod is fixedly connected to a top plate, and a third cylinder is fixedly installed on the middle part of the lower surface of the top plate, and a third piston rod is provided at the bottom of the third cylinder.

2. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: The limiting mechanism includes two slide grooves, and the two slide grooves are respectively opened in the middle of the front and the middle of the back of the placement box. Sliders are provided on the left and right sides of the inside of the slide groove. One end of the slider is fixedly connected to the limiting plate, and the other end of the slider is fixedly connected to the splint.

3. The mold clamping mechanism of an injection molding machine according to claim 2, characterized in that: A placement plate is fixedly connected to the lower middle part of the left and right sides of the placement box, and a first cylinder is fixedly installed on the upper surface of the placement plate. A first piston rod is provided at one end of the first cylinder, and a first tension spring is provided on the outside of the first piston rod.

4. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: The ejection mechanism includes a placement groove, which is opened in the middle of the inner bottom of the placement box, and a through hole is opened in the middle of the inner bottom of the placement groove.

5. The mold clamping mechanism of an injection molding machine according to claim 1, characterized in that: A placing rack is fixedly connected to the middle portion of the lower surface of the placing box, and a second cylinder is fixedly installed on the inner bottom of the placing rack.

6. The mold clamping mechanism of an injection molding machine according to claim 5, characterized in that: A second piston rod is provided on the top of the second cylinder, and a top plate is fixedly connected to the top of the second piston rod.

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