Clamping device of injection molding machine

Abstract

The utility model discloses a clamping device of an injection molding machine, which is used for clamping flip type plastic bottle caps and comprises a supporting seat arranged on a manipulator, a clamping jaw cylinder arranged at the bottom end of the supporting seat and provided with a pair of clamping jaws, and a pair of finger sheets arranged on the pair of clamping jaws respectively, the pair of finger sheets are oppositely arranged; each finger piece comprises a base part used for being connected with the corresponding clamping jaw, a clamping part extending downwards from the bottom end of the base part and used for clamping the first connecting part and the second connecting part, and a vertically-arranged flexible gasket arranged on the inner side face of the clamping part and used for being attached to the vertically-arranged outer wall of one side of the first connecting part and the vertically-arranged outer wall of one side of the second connecting part. According to the clamping device of the injection molding machine, the clamping efficiency of injection molding products can be improved, and the appearance quality of the injection molding products can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of injection molding machine clamping devices. BACKGROUND

[0002] Plastic bottle cap is generally produced by injection molding machine, after injection molding, it needs to be taken out from the injection molding machine by clamping device.

[0003] Some plastic bottle caps are flip-top, which include cap seat, upper flip-top and hinge connecting the cap seat and the upper flip-top. The cap seat has a first connecting part connected with the hinge, and the upper flip-top has a second connecting part connected with the hinge.

[0004] When the flip-top plastic bottle cap is completed, the upper flip-top is in a fully open state. When the flip-top plastic bottle cap is taken out from the injection molding machine, if only the cap seat is clamped or only the upper flip-top is clamped, the flip-top plastic bottle cap cannot be taken out stably as a whole, which affects the clamping efficiency of the injection molding product.

[0005] Moreover, the clamping device generally uses clamping jaw to clamp the flip-top plastic bottle cap, and the clamping jaw is generally made of metal. During the process of clamping the flip-top plastic bottle cap, the metal clamping jaw is easy to scratch the flip-top plastic bottle cap, causing appearance problems of the injection molding product. SUMMARY

[0006] To solve the defects of the prior art, the utility model provides an injection molding machine clamping device for clamping flip-top plastic bottle cap. The flip-top plastic bottle cap includes cap seat, upper flip-top and hinge connecting the cap seat and the upper flip-top. The upper flip-top is in a fully open state. The cap seat has a first connecting part connected with the hinge, and the first connecting part has a pair of vertical outer walls arranged on both sides of the hinge. The upper flip-top has a second connecting part connected with the hinge, and the second connecting part has a pair of vertical outer walls arranged on both sides of the hinge. The injection molding machine clamping device includes support seat arranged on the mechanical hand, clamping jaw cylinder with a pair of clamping jaws arranged at the bottom end of the support seat, and a pair of finger pieces arranged on the pair of clamping jaws. The pair of finger pieces are arranged oppositely.

[0007] The finger piece includes base part for connecting with the corresponding clamping jaw, clamping part extending downward from the bottom end of the base part for clamping the first connecting part and the second connecting part, and vertical flexible gasket arranged on the inner side of the clamping part for abutting against the vertical outer wall on one side of the first connecting part and the vertical outer wall on one side of the second connecting part.

[0008] Preferably, the finger piece further includes protective part extending backward from the bottom end of the base part for protecting the top end of the cap seat.

[0009] Preferably, the flexible gasket is silica gel gasket.

[0010] Preferably, the clamping jaw is a metal clamping jaw; and the finger piece is a metal finger piece.

[0011] Preferably, the pair of vertical outer walls of the first connecting portion are symmetrically arranged.

[0012] Preferably, the pair of vertical outer walls of the second connecting portion are symmetrically arranged.

[0013] Preferably, the base portions of the pair of finger pieces are symmetrically arranged.

[0014] Preferably, the clamping portions of the pair of finger pieces are symmetrically arranged.

[0015] Preferably, the flexible pads of the pair of finger pieces are symmetrically arranged.

[0016] Preferably, the protective portions of the pair of finger pieces are symmetrically arranged.

[0017] The injection molding machine clamping device has the advantages and beneficial effects that the clamping efficiency of the injection molding product is improved, and the appearance quality of the injection molding product is improved.

[0018] The injection molding machine clamping device has the following characteristics:

[0019] During the clamping of the injection molding product, the cap seat and the flip cover are stably clamped by the pair of finger pieces, the flip cover type plastic bottle cap can be stably moved out of the injection molding machine as a whole, and the clamping efficiency of the injection molding product is improved.

[0020] During the clamping of the injection molding product, the flexible pads on the pair of finger pieces respectively abut against the pair of vertical outer walls of the first connecting portion and the pair of vertical outer walls of the second connecting portion, only the flexible pads on the pair of finger pieces are in direct contact with the flip cover type plastic bottle cap (cap seat + hinge + flip cover) during the entire clamping operation, the metal clamping jaw and the metal finger piece can be prevented from scratching the flip cover type plastic bottle cap, and the appearance quality of the injection molding product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of a flip cover type plastic bottle cap;

[0022] Figure 2 is a schematic view of an injection molding machine clamping device;

[0023] Figure 3 is a schematic view of a pair of finger pieces;

[0024] Figure 4 is a schematic view of an injection molding machine clamping device clamping a flip cover type plastic bottle cap. DETAILED DESCRIPTION

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0026] The specific technical solution of this utility model is as follows:

[0027] like Figures 1 to 4 As shown, this utility model provides a clamping device for an injection molding machine, which is used to clamp a flip-top plastic bottle cap 1; the flip-top plastic bottle cap 1 includes: a cap base 11, an upper flip cap 12, and a hinge 13 connecting the cap base 11 and the upper flip cap 12 together; the upper flip cap 12 is in a fully open state; the cap base 11 has a first connecting part 110 connected to the hinge 13, the first connecting part 110 has a pair of vertical outer walls 111, 112 respectively disposed on both sides of the hinge 13; the upper flip cap 12 has a second connecting part 120 connected to the hinge 13, the second connecting part 120 has a pair of vertical outer walls 121, 122 respectively disposed on both sides of the hinge 13;

[0028] The injection molding machine gripping device includes: a support base 2 on the robotic arm, a gripper cylinder 3 located at the bottom of the support base 2 and having a pair of grippers 31, and a pair of finger pieces 4 disposed on the pair of grippers 31; the pair of finger pieces 4 are arranged opposite to each other and are disposed on both sides of the first connecting part 110, the hinge 13 and the second connecting part 120.

[0029] The finger piece 4 includes: a base portion 41 for connecting with the corresponding gripper 31; a clamping portion 42 extending downward from the bottom end of the base portion 41 for clamping the first connecting portion 110 and the second connecting portion 120; a vertically placed flexible pad 43 disposed on the inner side of the clamping portion 42 for abutting against the vertical outer wall (111 or 112) on one side of the first connecting portion 110 and the vertical outer wall (121 or 122) on one side of the second connecting portion 120; and a protective portion 44 extending rearward from the bottom end of the base portion 41 for protecting the top end of the bottle cap holder 11.

[0030] The gripper 31 is a metal gripper 31; the finger piece 4 is a metal finger piece 4; the flexible pad 43 is a silicone pad;

[0031] The first connecting portion 110 has a pair of vertically oriented outer walls that are symmetrically arranged; the second connecting portion 120 has a pair of vertically oriented outer walls that are symmetrically arranged.

[0032] The base portions 41 of the pair of finger pieces 4 are symmetrically arranged; the clamping portions 42 of the pair of finger pieces 4 are symmetrically arranged; the flexible pads 43 of the pair of finger pieces 4 are symmetrically arranged; and the protective portions 44 of the pair of finger pieces 4 are symmetrically arranged.

[0033] The working principle of this injection molding machine clamping device is as follows:

[0034] After the flip-top plastic bottle cap 1 is injection molded, the upper flip cap 12 is in the fully open state;

[0035] The support base 2 is driven by a robotic arm and the gripper cylinder 3 is driven into the injection molding machine, so that a pair of grippers 31 / a pair of finger pieces 4 are moved to the sides of the first connecting part 110, the hinge 13 and the second connecting part 120 respectively, and the flexible pads 43 on the pair of finger pieces 4 are directly opposite to the pair of vertical outer walls 111, 112 of the first connecting part 110 and the pair of vertical outer walls 121, 122 of the second connecting part 120 respectively.

[0036] Then, the gripper cylinder 3 drives a pair of grippers 31 / a pair of finger pieces 4 to move closer to each other, so that the flexible pads 43 on the pair of finger pieces 4 respectively abut against the pair of vertical outer walls 111, 112 of the first connecting part 110 and the pair of vertical outer walls 121, 122 of the second connecting part 120, until the pair of finger pieces 4 stably clamp the first connecting part 110 and the second connecting part 120; at this time, the pair of finger pieces 4 stably clamp the bottle cap seat 11 and the upper flip cap 12.

[0037] Then the robotic arm drives the support base 2 and moves the gripper cylinder 3 out of the injection molding machine, thereby moving the entire flip-top plastic bottle cap 1 (bottle cap base 11 + hinge 13 + upper flip cap 12) out of the injection molding machine in a stable manner, completing the gripping action of the injection molded product.

[0038] In the process of clamping injection molded products, this utility model uses a pair of finger pieces 4 to stably clamp both the bottle cap seat 11 and the upper flip cap 12, which can stably move the flip-type plastic bottle cap 1 out of the injection molding machine as a whole, thereby improving the clamping efficiency of injection molded products.

[0039] In the process of clamping injection molded products, the flexible pads 43 on a pair of finger pieces 4 respectively abut against a pair of vertical outer walls 111, 112 of the first connecting part 110 and a pair of vertical outer walls 121, 122 of the second connecting part 120. During the entire clamping action, only the flexible pads 43 on a pair of finger pieces 4 directly contact the flip-top plastic bottle cap 1 (bottle cap seat 11 + hinge 13 + upper flip cap 12), which can prevent the metal claws 31 and metal finger pieces 4 from scratching the flip-top plastic bottle cap 1, thereby improving the appearance quality of the injection molded product.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An injection molding machine gripper for gripping flip-top plastic bottle caps; The flip plastic bottle cap comprises a cap base, an upper flip, and a hinge connecting the cap base and the upper flip; the upper flip is in a fully open state; the cap base has a first connecting part connected with the hinge, and the first connecting part has a pair of vertical outer walls arranged on both sides of the hinge; the upper flip has a second connecting part connected with the hinge, and the second connecting part has a pair of vertical outer walls arranged on both sides of the hinge; the injection molding machine clamping device comprises a support seat arranged on a mechanical hand, a clamping cylinder with a pair of clamping jaws arranged at the bottom end of the support seat, and a pair of finger pieces arranged on the pair of clamping jaws; the pair of finger pieces are oppositely arranged. The finger piece comprises a base part for connecting with the corresponding clamping jaw, a clamping part extending downward from the bottom end of the base part and used for clamping the first connecting part and the second connecting part, and a vertical flexible gasket arranged on the inner side of the clamping part and used for abutting against the vertical outer wall on one side of the first connecting part and the vertical outer wall on one side of the second connecting part.

2. The injection molding machine clamp apparatus of claim 1 wherein, The finger piece further comprises a protection part extending backward from the bottom end of the base part and used for protecting the top end of the cap base.

3. The injection molding machine clamp apparatus of claim 1 wherein, The flexible gasket is a silica gel gasket.

4. The injection molding machine clamp apparatus of claim 1 wherein, The clamping jaw is a metal clamping jaw; the finger piece is a metal finger piece.

5. The injection molding machine clamp apparatus of claim 1 wherein, The pair of vertical outer walls of the first connecting part are symmetrically arranged.

6. The injection molding machine clamp apparatus of claim 1 wherein, The pair of vertical outer walls of the second connecting part are symmetrically arranged.

7. The injection molding machine clamp apparatus of claim 1 wherein, The base parts of the pair of finger pieces are symmetrically arranged.

8. The injection molding machine clamp apparatus of claim 1 wherein, The clamping parts of the pair of finger pieces are symmetrically arranged.

9. The injection molding machine clamp apparatus of claim 1 wherein, The flexible gaskets of the pair of finger pieces are symmetrically arranged.

10. The injection molding machine clamp apparatus of claim 1 wherein, The protection parts of the pair of finger pieces are symmetrically arranged.

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