Quick change mechanism for thermoforming molds

Abstract

The present invention provides a quick-change mechanism for a thermoforming mold, belonging to the field of mechanical technology. It solves the problem of poor stability in the prior art. The quick-change mechanism of the thermoforming mold is located between the main body and the core, and includes a pull rod, a clamping head, and a hook. The middle portion of the hook is hinged to the main body, and the upper end of the hook is movably connected to the pull rod. The clamping head is fixed to the upper part of the core, and the hook is buckled onto the clamping head. When the pull rod moves, the hook can swing around its hinge. After the pull rod swings, the hook and the clamping head can be separated. The quick-change mechanism of the thermoforming mold has high stability.

Description

Technical Field

[0001] The invention belongs to the technical field of machinery and relates to a quick-change mechanism of a thermoforming mold. Background Art

[0002] The mold for bowl lid products includes the mold body and the core connected to the body, which is also commonly known as the "copper head".

[0003] The middle core has corresponding patterns and shapes, and the corresponding middle core needs to be replaced when making different bowl cover products.

[0004] It can be seen that in actual production operations, different cores need to be frequently replaced. In existing molds, the core is usually fixed to the mold body with screws. During the replacement process, the mold needs to be opened and a large number of screws need to be loosened and tightened. This requires many disassembly steps, a large workload, low efficiency and long cycle time. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to provide a quick-change mechanism for a thermoforming mold that is easy to assemble and disassemble and has high stability.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A quick-change mechanism for a thermoforming mold, the thermoforming mold includes a cylindrical body and a cylindrical core, the core is connected to the lower end of the body, and is characterized in that the quick-change mechanism is located between the body and the core, and includes a pull rod, a clamp and a hook, the middle part of the hook is hinged in the body, the upper end of the hook is movably connected to the pull rod, the clamp is fixedly connected to the upper part of the core, and the hook is buckled on the clamp. When the pull rod moves, the hook can swing around its hinge, and the hook and the clamp can be disengaged after the pull rod swings.

[0008] When the quick-change mechanism of the thermoforming mold is in an initial state, the hook is engaged with the clamping head, and at this time, the core is stably connected to the body.

[0009] When the pull rod moves, the hook is pulled by the pull rod to swing around its hinge. After the hook swings away from the clamping head, the core can be stably removed from the body, thereby conveniently realizing disassembly.

[0010] On the contrary, the reverse operation can make the middle member stably connected to the main body.

[0011] It can be seen that the quick-change mechanism can enable the central core to be quickly and stably loaded and unloaded from the main body.

[0012] In the quick-change mechanism of the above-mentioned thermoforming mold, the hook includes hook one and hook two, the lower end of the hook has a recessed notch one, the lower end of the hook two has a recessed notch two, and the two sides of the above-mentioned clamping head are respectively embedded in notch one and notch two.

[0013] After the two sides of the clamping head are respectively embedded in the first notch and the second notch, the clamping head can be stably positioned and connected between the first hook and the second hook.

[0014] In the above-mentioned quick-change mechanism of the thermoforming mold, the recess 1 matches the side of the clamping head.

[0015] In the above-mentioned quick-change mechanism of the thermoforming mold, the second notch matches the side of the clamping head.

[0016] In the quick-change mechanism of the above-mentioned thermoforming mold, the lower end of the pull rod is fixedly connected with a guide part that matches the inner cavity of the main body, and the above-mentioned guide part has a protruding connecting pin 1 and a connecting pin 2. The upper end of the above-mentioned hook 1 has a strip-shaped connecting groove 1, and the upper end of the above-mentioned hook 2 has a strip-shaped connecting groove 2. The above-mentioned connecting pin 1 is embedded in the connecting groove 1, and the above-mentioned connecting pin 2 is embedded in the connecting groove 2.

[0017] Connecting pin 1 is embedded in connecting groove 1, and connecting pin 2 is embedded in connecting groove 2. The length of connecting groove 1 is greater than the outer diameter of connecting pin 1, and the length of connecting groove 2 is greater than the outer diameter of connecting pin 2. This structure allows connecting pin 1 to slide along connecting groove 1 and connecting pin 2 to slide along connecting groove 2.

[0018] In the quick-change mechanism of the above-mentioned thermoforming mold, when the two sides of the chuck are respectively embedded in recess 1 and recess 2, the angle between connecting groove 1 and the axis direction of the pull rod is 30-40 degrees, and connecting groove 1 and connecting groove 2 are symmetrically arranged with the axis of the pull rod as the reference.

[0019] This can effectively improve the structural compactness of the quick-change mechanism.

[0020] In the above-mentioned quick-change mechanism of the thermoforming mold, the hook 1 and the hook 2 are symmetrically arranged on both sides of the guide part with the axis of the pull rod as a reference.

[0021] In the above-mentioned quick-change mechanism of the thermoforming mold, a cylinder is fixedly connected to the upper end of the body, and the piston rod of the cylinder is fixedly connected to the pull rod.

[0022] During the operation of the cylinder, the piston rod can drive the pull rod to move up and down stably.

[0023] In the above-mentioned quick-change mechanism of the thermoforming mold, the clamping head is in the shape of a truncated cone, and is connected to the core through a connecting rod. The outer diameter of the connecting rod is smaller than the outer diameter of the clamping head.

[0024] Such a structure enables the clamping head to be stably clamped between the first hook and the second hook.

[0025] In the above-mentioned quick-change mechanism of the thermoforming mold, the clamping head, the connecting rod and the core are an integrated structure.

[0026] Compared with the existing technology, in the initial state of the quick-change mechanism of this thermoforming mold, the clamp on the core is stably positioned between the lower ends of hook one and hook two. At this time, the core is stably connected to the main body. Since the core has a concave and convex pattern, the corresponding pattern can be stably formed on the product.

[0027] When the center core needs to be replaced, the pull rod moves upward, and the pull rod drives hook 1 and hook 2 to swing around their hinges. After hook 1 and hook 2 swing, the clamping head of the center core is separated from the clamping hook. At this time, the center core can be quickly and smoothly disassembled from the main body.

[0028] It can be seen that the quick-change mechanism can quickly assemble and disassemble the center member and the main body, and the assembly and disassembly operations are simple.

[0029] In addition, the cooperation between the clamp head and the clamp hook can also ensure that the core is stably connected to the main body, and its stability is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the quick-change mechanism of the thermoforming mold.

[0031] Figure 2 It is a structural schematic diagram of the quick-change mechanism of the thermoforming mold when it is in another state.

[0032] In the figure, 1. body; 2. core; 3. pull rod; 3a. guide part; 4. chuck; 5. hook 1; 5a. notch 1; 5b. connecting groove 1; 6. hook 2; 6a. notch 2; 6b. connecting groove 2; 7. connecting pin 1; 8. connecting pin 2; 9. cylinder; 10. connecting rod. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying 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.

[0034] It should be noted that when a component is referred to as being "mounted on" another component, it may be mounted directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figure 1 and Figure 2 As shown, the thermoforming mold includes a cylindrical body 1 and a cylindrical core 2, and the core 2 is connected to the lower end of the body 1.

[0037] The quick-change mechanism of this thermoforming mold is located between the main body 1 and the core 2, and includes a pull rod 3, a clamping head 4 and a hook. The middle part of the above-mentioned hook is hinged in the main body 1, and the upper end of the hook is movably connected to the pull rod 3. The above-mentioned clamping head 4 is fixedly connected to the upper part of the core 2. The above-mentioned hook is buckled on the clamping head 4. When the pull rod 3 moves, the hook can swing around its hinge. After the pull rod 3 swings, the hook and the clamping head 4 can be separated.

[0038] The hook includes hook 1 5 and hook 2 6. The lower end of hook 1 5 has a concave notch 1 5a, and the lower end of hook 2 6 has a concave notch 2 6a. The two sides of the above-mentioned clamping head 4 are respectively embedded in notch 1 5a and notch 2 6a.

[0039] The notch 5 a matches the side of the clamp 4 .

[0040] The second notch 6 a matches the side of the clamp 4 .

[0041] The lower end of the pull rod 3 is fixedly connected with a guide part 3a that matches the inner cavity of the main body 1. The above-mentioned guide part 3a has a protruding connecting pin 1 7 and a connecting pin 2 8. The upper end of the above-mentioned hook 1 5 has a strip-shaped connecting groove 1 5b, and the upper end of the above-mentioned hook 2 6 has a strip-shaped connecting groove 2 6b. The above-mentioned connecting pin 1 7 is embedded in the connecting groove 1 5b, and the above-mentioned connecting pin 2 8 is embedded in the connecting groove 2 6b.

[0042] When both sides of the clamping head 4 are respectively embedded in the notch 1 5a and the notch 2 6a, the angle between the connecting groove 1 5b and the axis direction of the pull rod 3 is 30-40 degrees, and the connecting groove 1 5b and the connecting groove 2 6b are symmetrically arranged with the axis of the pull rod 3 as the reference.

[0043] The hook 1 5 and the hook 2 6 are symmetrically arranged on both sides of the guide portion 3a with the axis of the pull rod 3 as a reference.

[0044] The upper end of the body 1 is fixedly connected to a cylinder 9 , and the piston rod of the cylinder 9 is fixedly connected to the pull rod 3 .

[0045] The clamping head 4 is in the shape of a truncated cone and is connected to the core 2 via a connecting rod 10 . The outer diameter of the connecting rod 10 is smaller than the outer diameter of the clamping head 4 .

[0046] The clamping head 4, the connecting rod 10 and the core 2 are an integrated structure.

[0047] When the quick-change mechanism of the thermoforming mold is in an initial state, the hook is engaged with the clamping head, and at this time, the core is stably connected to the body.

[0048] When the pull rod moves, the hook is pulled by the pull rod to swing around its hinge. After the hook swings away from the clamping head, the core can be stably removed from the body, thereby conveniently realizing disassembly.

[0049] On the contrary, the reverse operation can make the middle member stably connected to the main body.

[0050] It can be seen that the quick-change mechanism can enable the central core to be quickly and stably loaded and unloaded from the main body.

[0051] The various technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. Any appropriate changes and modifications to the above embodiments fall within the scope of the present invention as long as they are within the spirit of the present invention.

Claims

1. A quick-change mechanism for a thermoforming mold, the thermoforming mold comprising a cylindrical body and a cylindrical core, the core being connected to the lower end of the body, characterized in that: The quick-change mechanism is located between the main body and the center core, and includes a pull rod, a clamping head, and a hook. The middle portion of the clamping hook is hinged in the main body, and the upper end of the hook is movably connected to the pull rod. The clamping head is fixed to the upper part of the center core, and the hook is buckled on the clamping head. When the pull rod is moved upward, the hook can swing around its hinge, and the hook can be separated from the clamping head after the swing. The hook comprises a first hook and a second hook, wherein the lower end of the hook has a first recessed notch, and the lower end of the second hook has a second recessed notch, and the two sides of the clamping head are respectively embedded in the first recess and the second recess; The notch 1 matches the side of the chuck; The second notch matches the side of the clamp; The lower end of the pull rod is fixedly connected with a guide part that matches the inner cavity of the main body. The guide part has protruding connecting pin 1 and connecting pin 2. The upper end of the hook 1 has a strip-shaped connecting groove 1, and the upper end of the hook 2 has a strip-shaped connecting groove 2. The connecting pin 1 is embedded in the connecting groove 1, and the connecting pin 2 is embedded in the connecting groove 2.

2. The quick-change mechanism of the thermoforming mold according to claim 1, characterized in that: When both sides of the clamp are respectively embedded in the first and second notches, the angle between the first connecting groove and the axis of the pull rod is 30-40 degrees, and the first connecting groove and the second connecting groove are symmetrically arranged with the axis of the pull rod as the reference.

3. The quick-change mechanism of the thermoforming mold according to claim 2, characterized in that: The hook 1 and the hook 2 are symmetrically arranged on both sides of the guide portion with the axis of the pull rod as a reference.

4. The quick-change mechanism of the thermoforming mold according to claim 3, characterized in that: The upper end of the body is fixedly connected with a cylinder, and the piston rod of the cylinder is fixedly connected with the pull rod.

5. The quick-change mechanism of the thermoforming mold according to claim 4, characterized in that: The clamping head is in the shape of a truncated cone and is connected to the core through a connecting rod. The outer diameter of the connecting rod is smaller than the outer diameter of the clamping head.

6. The quick-change mechanism of the thermoforming mold according to claim 5, characterized in that: The clamping head, connecting rod and core are an integrated structure.

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