A movable buckle for a blister mold

Abstract

The utility model relates to blister product forming equipment field especially a kind of movable buckle for blister mould, including base, sliding seat, insert and elastic piece, when using, movable buckle is set on blister mould, when blister forming, softened raw material is adsorbed in the cavity of blister mould, and through base, insert and hook portion make when blister product form reverse buckle position, when blister product demoulding, the buckle position on blister product exerts a demolding force to hook portion, to push insert to move up and rotate, so that hook portion is separated from the buckle position of product, so as to facilitate product demoulding, and product deformation is not caused in the process of demoulding, reach the protection effect to product.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming equipment, and in particular to a movable buckle for thermoforming molds. Background Technology

[0002] Vacuum forming is a plastic processing technology. The main principle is to heat a flat, rigid plastic sheet until it softens, then use vacuum to adhere it to the surface of a mold, and finally cool it to form the desired shape. It is widely used in industries such as plastic packaging, lighting, advertising, and decoration.

[0003] Chinese utility model patent CN201620943474.4 discloses a mold structure for producing snap fasteners for blister boxes. It includes a mold body, a male snap fastener mold, a male snap fastener hook, a female snap fastener hook, and a female snap fastener mold. The male and female snap fastener molds are fixedly connected to the edge of the mold body and are respectively located on both sides of the mold body. The top of the male snap fastener mold has a conical structure, and the top of the female snap fastener mold has a funnel-shaped structure. A sliding groove is provided at the center of both the male and female snap fastener molds. The male snap fastener hook is slidably connected to the sliding groove of the male snap fastener mold, and the female snap fastener hook is slidably connected to the sliding groove of the female snap fastener mold. The top hooks of both the male and female snap fastener hooks are located at the top of the sliding groove. This design solves the problem that existing blister boxes require a relatively large force to snap together, making large-scale operation difficult for workers on manual production lines, resulting in low production efficiency and unsuitability for automated production. However, the male or female buckle in this mold is difficult to demold after the vacuum forming part is formed, and it will cause serious deformation of the product after demolding. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A movable buckle for a vacuum forming mold includes a base, a slide, an insert, and an elastic element. The base has a travel groove extending through its front and rear sides. The upper end of the base has a support boss. The upper end of the base has an opening communicating with the travel groove on one side of the support boss. The slide is slidably disposed in the travel groove. The upper end of the slide extends out from the opening and is hinged to the beginning end of the insert. The end of the insert has a hook. The lower end of the slide has an abutment boss. The elastic element is disposed in the travel groove, with one end abutting against the inner wall of the travel groove and the other end abutting against the abutment boss.

[0006] As a further embodiment of this utility model: the upper end of the base has a shaped surface on the side of the opening.

[0007] As a further embodiment of this utility model, the angle between the central axis of the stroke groove and the central axis of the base is 5° to 15°.

[0008] As a further embodiment of this utility model, the angle between the central axis of the supporting boss and the central axis of the base is 5° to 15°.

[0009] As a further embodiment of this utility model: the upper end of the slide is provided with a sliding boss, the sliding boss and the supporting boss are slidably engaged, and the supporting boss is provided with a first limiting boss located below the sliding boss.

[0010] As a further embodiment of this utility model: a limiting protrusion is provided on one side of the abutting boss, and a second limiting boss is provided on the inner wall of the stroke groove above the limiting protrusion.

[0011] As a further embodiment of this utility model: an arc-shaped groove is provided at the upper end of the slide block, an extension block is provided at the beginning of the insert, a circular block is provided at the end of the extension block, and the circular block is set in the arc-shaped groove.

[0012] As a further embodiment of this utility model, the angle between the forming surface and the horizontal plane is 30° to 40°.

[0013] As a further embodiment of this utility model: the forming surface is parallel to the horizontal plane.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Through the arrangement of the base, slide, insert, and elastic element, the movable buckle is set on the vacuum forming mold during use. During vacuum forming, the softened raw material is added and adsorbed into the cavity of the vacuum forming mold. The base, insert, and hook create an inverted snap-fit ​​position on the vacuum-formed product. When the vacuum-formed product is demolded, the snap-fit ​​on the product applies a demolding force to the hook, thereby pushing the insert upwards and rotating, causing the hook to disengage from the snap-fit ​​position on the product. This facilitates product demolding and prevents product deformation during demolding, thus protecting the product. After demolding, the elastic element pushes the insert back to its original position.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the movable buckle structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the base structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the slide block structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the insert part of this utility model.

[0021] In the diagram: 100, movable buckle; 201, recessed part; 202, protruding part; 200, vacuum forming mold; 1, base; 2, slide; 3, insert; 4, elastic part; 5, stroke groove; 6, support boss; 7, opening; 8, hook; 9, abutting boss; 10, forming surface; 11, sliding boss; 12, first limiting boss; 13, limiting protrusion; 14, second limiting boss; 15, arc groove; 16, extension block; 17, circular block. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figures 1-4 In this embodiment of the utility model, a movable buckle 100 for a vacuum forming mold includes a base 1, a slide 2, an insert 3, and an elastic member 4. The base 1 has a travel groove 5 that runs through its front and rear sides. The upper end of the base 1 has a support boss 6. The upper end of the base 1 has an opening 7 on one side of the support boss 6 that communicates with the travel groove 5. The slide 2 is slidably disposed in the travel groove 5. The upper end of the slide 2 extends out from the opening 7 and is hinged to the beginning end of the insert 3. The end of the insert 3 has a hook 8. The lower end of the slide 2 has an abutment boss 9. The elastic member 4 is disposed in the travel groove 5, with one end abutting against the inner wall of the travel groove 5 and the other end abutting against the abutment boss 9.

[0024] It should be noted that the vacuum forming mold 200 has multiple recesses 201 and protrusions 202. Each recess 201 and protrusion 202 has a movable buckle 100, used to form interlocking snaps on the two mating surfaces of the product. During vacuum forming, softened raw material is added and adsorbed into the cavity of the vacuum forming mold 200. The base 1, insert 3, and hook 8 form snaps on the vacuum-formed product. When the vacuum-formed product is demolded, the snaps on the product apply a demolding force to the hook 8, thereby pushing the insert 3 upwards and rotating it, causing the hook 8 to disengage from the snaps on the product. This facilitates product demolding and prevents product deformation during demolding, thus protecting the product. After demolding, the insert 3 is pushed back to its original position by the elastic element 4.

[0025] The upper end of the base 1 is provided with a molding surface 10 on one side of the opening 7.

[0026] The molding surface 10 has two implementation methods. The first implementation method is described in reference [reference needed]. Figure 2 The angle between the forming surface 10 and the horizontal plane is 30° to 40°.

[0027] Another embodiment of the molding surface 10 is described in reference. Figure 3 The forming surface 10 is parallel to the horizontal plane. Two methods can be selected based on the product shape to meet the production needs of different products.

[0028] The angle between the central axis of the travel groove 5 and the central axis of the base 1 is 5° to 15°. Thus, when a demolding force is applied to the hook part 8 on the thermoformed product, the slide 2 moves along the travel groove 5 during the process of pushing the insert 3 upward, causing the insert 3 to move upward at an angle, thereby gradually separating the product from the insert 3 at an angle, which facilitates product demolding.

[0029] The angle between the central axis of the supporting boss 6 and the central axis of the base 1 is 5° to 15°. A sliding boss 11 is provided at the upper end of the slide 2, which slides in conjunction with the supporting boss 6. A first limiting boss 12 is provided on the supporting boss 6 below the sliding boss 11. After a demolding force is applied to the hook portion 8 on the thermoformed product, the slide 2 and the insert 3 can move upwards along the supporting boss 6. During the movement, the insert 3 is restricted from rotating by the supporting boss 6. When the slide 2 moves to a certain position and stops moving, the insert 3 moves away from the supporting boss 6 and rotates, thus allowing the insert 3 to move upwards and detach from the product before rotating, ensuring that the product is not deformed during demolding.

[0030] A limiting protrusion 13 is provided on one side of the abutting boss 9, and a second limiting boss 14 is provided on the inner wall of the stroke groove 5 above the limiting protrusion 13. The limiting protrusion 13 and the second limiting boss 14 prevent the slide block 2 from sliding out of the stroke groove 5.

[0031] The upper end of the slide block 2 is provided with an arc-shaped groove 15, and the beginning end of the insert 3 is provided with an extension block 16, and the end end of the extension block 16 is provided with a circular block 17, which is disposed in the arc-shaped groove 15. When the slide block 2 moves up to a certain position and stops moving due to the restriction of the second limiting boss 14, the insert 3 moves away from the supporting boss 6, and the circular block 17 rotates in the arc-shaped groove 15, thereby causing the insert 3 to rotate and disengage from the fastener. After the product is demolded, under the action of the elastic element 4, the insert 3 is pushed down, and the insert 3 rotates and resets under the restriction of the supporting boss 6.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A movable catch for a blister mold, characterized in that, The device includes a base, a slide, an insert, and an elastic element. The base has a travel groove that runs through its front and rear sides. The upper end of the base has a support boss. The upper end of the base has an opening on one side of the support boss that communicates with the travel groove. The slide is slidably disposed in the travel groove. The upper end of the slide extends out from the opening and is hinged to the beginning end of the insert. The end of the insert has a hook. The lower end of the slide has an abutment boss. The elastic element is disposed in the travel groove, with one end abutting against the inner wall of the travel groove and the other end abutting against the abutment boss.

2. A movable buckle for a blister mold according to claim 1, characterized in that: The upper end of the base has a shaped surface on one side of the opening.

3. A movable buckle for a vacuum forming mold according to claim 1, characterized in that: The angle between the central axis of the travel groove and the central axis of the base is 5° to 15°.

4. A movable buckle for a vacuum forming mold according to claim 1, characterized in that: The angle between the central axis of the supporting boss and the central axis of the base is 5° to 15°.

5. A movable buckle for a vacuum forming mold according to claim 1, characterized in that: The upper end of the slide is provided with a sliding boss, which slides in conjunction with the support boss. The support boss is provided with a first limiting boss located below the sliding boss.

6. A movable buckle for a vacuum forming mold according to claim 1, characterized in that: A limiting protrusion is provided on one side of the abutting boss, and a second limiting boss is provided on the inner wall of the stroke groove above the limiting protrusion.

7. A movable buckle for a vacuum forming mold according to claim 1, characterized in that: The upper end of the slide has an arc-shaped groove, the beginning of the insert has an extension block, the end of the extension block has a circular block, and the circular block is set in the arc-shaped groove.

8. A movable buckle for a vacuum forming mold according to claim 2, characterized in that: The angle between the forming surface and the horizontal plane is 30° to 40°.

9. A movable buckle for a vacuum forming mold according to claim 2, characterized in that: The forming surface is parallel to the horizontal plane.

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