Anti-pinch mechanism for injection molding device

Abstract

According to the technical scheme, the anti-pinch mechanism for the injection molding device is characterized in that the anti-pinch mechanism comprises an installation base, an upper die assembly, a lower die assembly and an anti-pinch assembly, the upper die assembly, the lower die assembly and the anti-pinch assembly are all installed on the installation base, and a feeding gap for a cloth belt to penetrate through is reserved between the upper die assembly and the lower die assembly; the lower die assembly comprises a lower die base, a lower die plate and a first lifting part, the lower die plate is connected to the lower die base in a lifting mode, the first lifting part is used for driving the lower die plate to move up and down, grooves for allowing cloth belts to be inserted are formed in the two sides of the lower die plate in the width direction, and the cloth belts are conveyed in the length direction of the lower die plate; according to the anti-pinch mechanism, the cloth belt can be prevented from being clamped, and the high production efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of zipper manufacturing technology, and more specifically, it relates to an anti-pinch mechanism for injection molding devices. Background Technology

[0002] Zippers are common items in people's lives, mainly used in clothing, shoes, hats, and various bags. Zippers are usually composed of fabric tape, chain teeth, and a zipper pull. The chain teeth are arranged continuously on the edges of two fabric tapes. By sliding the zipper pull, the chain teeth on the two fabric tapes can be engaged or disengaged, thus achieving the function of opening and closing. In order to improve the waterproof and airproof effect when sealing, airtight zippers are used as sealing components.

[0003] An airtight zipper, as the name suggests, is a zipper that is both waterproof and airtight. It forms a sealed layer through the interlocking teeth of the zipper, preventing the flow of gas and liquid inside and outside the zipper.

[0004] Our company previously applied for a zipper production equipment and processing method with publication number CN112590113B. In this method, an upper injection mold and a lower injection mold are bonded together to form a mold, and then thermoplastic material is injected to form the chain teeth. However, the production process of airtight zippers differs from that of conventional zippers in the following ways: During the injection molding process, the two fabric strips need to be brought relatively close so that they can fit tightly when the chain teeth mesh. After completing one injection molding process, it is necessary to control the lower injection mold to rise and then fall. During this process, the fabric strips will be clamped, which will affect the next injection molding operation and reduce production efficiency. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an anti-pinch mechanism for injection molding equipment, which can prevent the fabric tape from being pinched and ensure high production efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anti-pinch mechanism for an injection molding device, comprising a mounting base, an upper mold assembly, a lower mold assembly, and an anti-pinch assembly, wherein the upper mold assembly, the lower mold assembly, and the anti-pinch assembly are all mounted on the mounting base, and a feeding gap for the fabric belt to pass through is provided between the upper mold assembly and the lower mold assembly.

[0007] The lower mold assembly includes a lower mold base, a lower template, and a first lifting component. The lower template is jackingly connected to the lower mold base. The first lifting component is used to drive the lower template to move up and down. Grooves for inserting a fabric strip are provided on both sides of the lower template in the width direction. The fabric strip is delivered along the length direction of the lower template.

[0008] The anti-pinch component is used to drive the fabric strip to separate to both sides.

[0009] The present invention is further configured such that: the anti-pinch component is provided in two sets, and is respectively provided at both ends of the lower template length direction.

[0010] The present invention is further configured such that: the anti-pinch component includes a second lifting member and a lifting block, wherein the second lifting member is used to drive the lifting block to move up and down;

[0011] The lower mold base is provided with two sets of lifting grooves, which are located at the center of both ends of the lower mold plate. The lifting block is slidably connected in the lifting groove. When the lifting block extends out of the lifting groove, it pushes the left and right sections of the fabric belt to flip to both sides.

[0012] The present invention is further configured such that both the first lifting component and the second lifting component are cylinders or electric cylinders.

[0013] The present invention is further configured such that both sides of the lifting block are provided with guide arc surfaces.

[0014] The present invention is further configured such that each anti-pinch component includes an adjusting member and a clamping member located on both sides of the lower template, wherein the adjusting member is used to drive the clamping member to move along the width direction of the lower template.

[0015] The present invention is further configured such that: the clamping member includes a positioning seat, a positioning plate, a clamping plate and a driving cylinder; the positioning seat is slidably connected to the mounting seat; the positioning plate is fixedly installed on the positioning seat; the clamping plate is slidably connected to the positioning seat; and the driving cylinder is used to drive the clamping plate to move up and down.

[0016] The adjusting component is used to drive the positioning seat to move along the width direction of the lower template.

[0017] The present invention is further configured to include a controller, which is electrically connected to the upper mold assembly, the lower mold assembly, and the anti-pinch assembly respectively.

[0018] The present invention is further configured such that: the upper mold assembly includes a third lifting component, an upper template, and an injection component; the third lifting component is used to drive the upper template to move up and down; and the injection component is connected to the upper template through an injection pipe.

[0019] In summary, this utility model has the following beneficial effects: After a single injection molding operation is completed, the upper mold assembly and the lower mold assembly are separated first, and then the lower mold plate is moved upward by the first lifting component, so that the chain teeth that have completed the injection are separated from the injection cavity on the lower mold base, thereby ensuring that the fabric belt moves without obstruction. When the lower part of the fabric belt moves to the designated area, the fabric belt is separated to both sides by the anti-pinch component. Subsequently, during the downward movement of the lower mold plate, the fabric belt will not be clamped, thereby ensuring the effectiveness of the process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the injection molding device in Embodiment 1;

[0021] Figure 2 for Figure 1 Enlarged view of point A;

[0022] Figure 3 This is a schematic diagram of the anti-pinch mechanism;

[0023] Figure 4 This is a three-dimensional structural diagram of the injection molding device in Embodiment 2.

[0024] Reference numerals: 1. Mounting base; 11. Lifting groove; 2. Upper mold assembly; 3. Lower mold assembly; 31. Lower mold base; 32. Lower template; 33. Groove; 4. Anti-pinch assembly; 41. Lifting block; 42. Guide arc surface; 43. Adjusting component; 44. Clamping component; 441. Positioning seat; 442. Positioning plate; 443. Clamping plate; 5. Controller. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] Reference Figures 1 to 4 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: an anti-pinch mechanism for an injection molding device, comprising a mounting base 1, an upper mold assembly 2, a lower mold assembly 3, and an anti-pinch assembly 4. The upper mold assembly 2, the lower mold assembly 3, and the anti-pinch assembly 4 are all mounted on the mounting base 1, and a feeding gap for the fabric belt to pass through is left between the upper mold assembly 2 and the lower mold assembly 3.

[0027] The lower mold assembly 3 includes a lower mold base 31, a lower template 32 and a first lifting member. The lower template 32 is scissor-connected to the lower mold base 31. The first lifting member is used to drive the lower template 32 to move up and down. The lower template 32 has grooves 33 for inserting a fabric strip on both sides in the width direction. The fabric strip is delivered along the length direction of the lower template 32.

[0028] The anti-pinch component 4 is used to drive the fabric belt to separate to both sides.

[0029] The upper mold assembly 2 includes a third lifting component, an upper mold plate, and an injection component. The third lifting component is used to drive the upper mold plate to move up and down, and the injection component is connected to the upper mold plate through an injection tube.

[0030] The design of this structure is based on CN112590113B, which was previously applied for by our company. The fabric belt passes through the injection area in sequence under the action of the traction structure. When the upper mold assembly 2 moves down, it can form an injection space with the lower mold assembly 3, and then inject material into the injection space to form chain teeth.

[0031] After a single injection molding operation is completed, the upper mold assembly 2 and the lower mold assembly 3 are separated. Then, the lower mold plate 32 is moved upward by the first lifting component, so that the chain teeth that have completed the injection are separated from the injection cavity on the lower mold base 31, thereby ensuring that the fabric belt moves without obstruction. When the lower part of the fabric belt moves to the designated area, the anti-pinch component 4 separates the fabric belt to both sides. Then, during the downward movement of the lower mold plate 32, the fabric belt will not be clamped, thereby ensuring the effectiveness of the process.

[0032] This invention is further configured such that: two sets of anti-pinch components 4 are provided, and are respectively located at both ends of the lower template 32 along its length. This structural design can separate the fabric strip at both ends of the lower template 32 to both sides, thereby effectively preventing it from being pinched.

[0033] Example 1 of anti-pinch component 4: Anti-pinch component 4 includes a second lifting member and a lifting block 41. The second lifting member is used to drive the lifting block 41 to move up and down.

[0034] The lower mold base 31 is provided with two sets of lifting grooves 11, which are located at the center of both ends of the lower mold plate 32. The lifting block 41 is slidably connected in the lifting groove 11. When the lifting block 41 extends out of the lifting groove 11, the lifting block 41 pushes the left and right sections of the fabric belt to flip to both sides.

[0035] like Figure 2 As shown, the design of this structure allows the two fabric strips to flip outwards when the lifting block 41 pushes out from the middle of the two fabric strips, thereby causing the fabric strips between the two ends to separate from the lower template 32, thus achieving the effect of preventing pinching.

[0036] This utility model is further configured such that both the first and second lifting components are pneumatic or electric cylinders. Alternatively, a motor-driven lifting rod structure can be used; these lifting methods are existing technologies and will not be elaborated upon here.

[0037] Furthermore, this third lifting component is consistent with the aforementioned lifting components, employing structures such as cylinders, electric cylinders, and motor lifting rods.

[0038] This utility model is further configured such that: both sides of the lifting block 41 are provided with guide arc surfaces 42. For example... Figure 2 As shown, the design of the guide arc surface 42 can facilitate the flipping of the fabric strips on both sides, thereby achieving displacement.

[0039] Example 2 of anti-pinch component 4: Each anti-pinch component 4 includes an adjusting member 43 and a clamping member 44 located on both sides of the lower template 32. The adjusting member 43 is used to drive the clamping member 44 to move along the width direction of the lower template 32.

[0040] The present invention is further configured such that: the clamping member 44 includes a positioning seat 441, a positioning plate 442, a clamping plate 443 and a driving cylinder; the positioning seat 441 is slidably connected to the mounting seat 1; the positioning plate 442 is fixedly installed on the positioning seat 441; the clamping plate 443 is slidably connected to the positioning seat 441; and the driving cylinder is used to drive the clamping plate 443 to move up and down.

[0041] Adjustment component 43 is used to drive positioning seat 441 to move along the width direction of lower template 32.

[0042] like Figure 4 As shown, the design of this structure, when separation is required, first controls the adjusting component 43 to bring the clamping component 44 closer to the fabric belt, then drives the cylinder (or motor lifting rod) to make the clamping plate 443 abut against the positioning plate 442 to achieve the clamping effect on the fabric belt, and then uses the adjusting component 43 to move the clamping component 44 away from the lower template 32, thereby pulling the fabric belt to move to both sides to play the role of anti-pinch.

[0043] Preferably, one end of the clamping plate 443 is provided with a bevel, which facilitates insertion under the fabric strip.

[0044] This utility model is further configured to include a controller 5, which is electrically connected to the upper mold assembly 2, the lower mold assembly 3, and the anti-pinch assembly 4. Figure 1 Therefore, the operation of the equipment can be controlled through controller 5.

[0045] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An anti-pinch mechanism for an injection molding machine, characterized in that: The utility model relates to a kind of automatic cloth cutting machine, including mounting seat (1) and upper die assembly (2), lower die assembly (3) and anti-pinch assembly (4), the upper die assembly (2), lower die assembly (3) and anti-pinch assembly (4) are all installed on mounting seat (1), and feeding gap is left between the upper die assembly (2) and lower die assembly (3) for cloth tape to pass through; The lower die assembly (3) includes lower die seat (31), lower die plate (32) and first lifting piece, the lower die plate (32) is lifted and is connected on lower die seat (31), the first lifting piece is used to drive lower die plate (32) to move up and down, recess (33) for cloth tape insertion is provided on the both sides of lower die plate (32) in width direction, and cloth tape is delivered along the length direction of lower die plate (32) setting; The anti-pinch assembly (4) is used to drive cloth tape to separate to both sides.

2. The anti-pinch mechanism for an injection molding device according to claim 1, characterized by: The anti-pinch assembly (4) is provided with two groups, and is respectively arranged at the both ends of the length direction of lower die plate (32).

3. The anti-pinch mechanism for an injection molding device according to claim 2, characterized in that: The anti-pinch assembly (4) includes second lifting piece and lifting block (41), and the second lifting piece is used to drive lifting block (41) to move up and down; The lower die seat (31) is provided with two groups of lifting grooves (11), and the two groups of lifting grooves (11) are respectively located at the center of the both ends of lower die plate (32), and the lifting block (41) is slidably connected in the lifting groove (11), when the lifting block (41) is stretched out from the lifting groove (11), the lifting block (41) pushes the left and right two sections of cloth tape to overturn to both sides.

4. The anti-pinch mechanism for an injection molding device according to claim 3, characterized in that: The first lifting piece and the second lifting piece both include a pneumatic cylinder or an electric cylinder.

5. The anti-pinch mechanism for an injection molding device according to claim 3, wherein: The both sides of the lifting block (41) are provided with guide camber (42).

6. The anti-pinch mechanism for an injection molding device of claim 2, wherein: Each group of the anti-pinch assembly (4) includes adjusting piece (43) and clamping piece (44) located at the both sides of lower die plate (32), and the adjusting piece (43) is used to drive clamping piece (44) to move along the width direction of lower die plate (32).

7. The anti-pinch mechanism for an injection molding device according to claim 6, characterized in that: The clamping piece (44) includes positioning seat (441), positioning plate (442), clamping plate (443) and driving cylinder, the positioning seat (441) is slidably connected on mounting seat (1), the positioning plate (442) is fixedly installed on the positioning seat (441), the clamping plate (443) is slidably connected on the positioning seat (441), and the driving cylinder is used to drive the clamping plate (443) to move up and down; The adjusting piece (43) is used to drive the positioning seat (441) to move along the width direction of lower die plate (32).

8. The anti-pinch mechanism for an injection molding device according to any one of claims 1 to 7, characterized in that: Further including controller (5), and the controller (5) is electrically connected with upper die assembly (2), lower die assembly (3) and anti-pinch assembly (4) respectively.

9. The anti-pinch mechanism for an injection molding apparatus according to claim 8, characterized by: The upper die assembly (2) includes third lifting piece, upper die plate and injection material piece, the third lifting piece is used to drive upper die plate to move up and down, and the injection material piece is connected with upper die plate by injection material pipe.

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