A quick demolding device for pulp molded environment-friendly packaging box

Abstract

The utility model relates to the field of packing carton discloses a kind of pulp moulding environmental protection packing box quick demolding device, including lower mould, the inner wall of lower mould is penetrated and the sliding connection of L frame has, the left end fixedly connected with fixed block of L frame, the front end fixedly connected with moving plate of L frame, the top of moving plate is hinged with connecting plate by hinged rod, and the top of connecting plate is detachably installed with top plate. In the utility model, motor drives cam rotation, and the precise conversion of horizontal displacement to vertical jacking is realized through L frame, hinged rod, and the quick reset of reset spring is matched, the quick demolding of pulp moulding packing box is realized, and simultaneously with the curve characteristics of cam profile, the pushing distance of fixed block can be adjusted by motor driving cam rotation, the ejection height of top plate is flexibly changed, the demolding requirement of different thickness specifications of packing box is adapted, and the adaptation ability of device to diversified production scene is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging boxes, and in particular to a rapid demolding device for environmentally friendly pulp molded packaging boxes. Background Technology

[0002] Pulp molding eco-friendly packaging boxes are biodegradable packaging containers made from renewable plant fibers such as waste paper, bagasse, and bamboo pulp through pulping, molding, and drying processes.

[0003] The existing technology has the following drawbacks: most of them use a single cylinder to drive the ejector rod for vertical ejection. In order to simplify the structure and reduce costs, traditional push-type demolding equipment often adopts a fixed stroke design, which results in the ejection height being non-adjustable. The fixed ejection height design means that the equipment can only be adapted to packaging boxes of a single thickness specification. When facing the production needs of multiple specifications, the entire push-module needs to be replaced, which not only has high replacement costs, but also seriously delays the production rhythm. To solve the above problems, a rapid demolding device for pulp molded environmentally friendly packaging boxes is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a rapid demolding device for pulp molded environmentally friendly packaging boxes, which aims to improve the problem of fixed ejection stroke in some existing equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid demolding device for pulp molded environmentally friendly packaging boxes, comprising a lower mold, an L-frame slidably connected through the inner wall of the lower mold, a fixed block fixedly connected to the left end of the L-frame, a movable plate fixedly connected to the front end of the L-frame, a connecting plate hinged to the top of the movable plate via a hinge rod, a top plate detachably mounted on the top of the connecting plate, a driving mechanism provided on the outer wall of the lower mold, a support block fixedly connected to the outer wall of the lower mold, a support rod threadedly connected through the inner wall of the support block, an elastic connection between the left side wall of the support block and the L-frame via a return spring, an upper mold provided at the top of the lower mold, and a connecting mechanism provided at the top of the connecting plate;

[0006] The drive mechanism includes a motor, which is fixedly connected to the outer wall of the lower mold via a bracket, and a cam is fixedly connected to the output end of the motor.

[0007] As a further description of the above technical solution:

[0008] The connecting mechanism includes a round rod, which is fixedly connected to the top of the connecting plate. A round block is slidably connected to the inner wall of the round rod. Two sets of round blocks are provided, and the two sets of round blocks are elastically connected by a positioning spring.

[0009] As a further description of the above technical solution:

[0010] The circular block is inserted into the inner wall of the top plate.

[0011] As a further description of the above technical solution:

[0012] The round rod passes through the inner wall of the lower mold.

[0013] As a further description of the above technical solution:

[0014] The top end of the movable plate is hinged to one end of the hinge rod, and the other end of the hinge rod is hinged to the bottom end of the connecting plate.

[0015] As a further description of the above technical solution:

[0016] The movable plate is slidably connected to the inner wall of the lower mold.

[0017] As a further description of the above technical solution:

[0018] The connecting plate is slidably connected to the inner wall of the lower mold.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the cam is in contact with the left end of the fixed block.

[0021] As a further description of the above technical solution:

[0022] Both the L-frame and the fixing block penetrate through the outer wall of the support rod.

[0023] As a further description of the above technical solution:

[0024] The left sidewall of the support block is in contact with one end of the return spring, and the other end of the return spring is in contact with the right sidewall of the L-frame.

[0025] This utility model has the following beneficial effects:

[0026] 1. In this utility model, the cam is driven to rotate by a motor, and the horizontal displacement is precisely converted to vertical pushing through the L-frame and hinge rod. With the help of the return spring for quick reset, the pulp molded packaging box can be demolded quickly. At the same time, by taking advantage of the curve characteristics of the cam profile, the pushing distance of the fixed block can be adjusted by the cam being driven to rotate by the motor, and the ejection height of the top plate can be flexibly changed to adapt to the demolding requirements of packaging boxes of different thicknesses and specifications, thereby improving the adaptability of the device to diverse production scenarios.

[0027] 2. In this utility model, the top plate adopts an elastic snap-fit ​​structure of positioning spring and round block. When replacing, it is only necessary to manually pull the round block out of the slot to complete the disassembly when the top plate is in the top material state. When installing, insert the new top plate and squeeze the round block. After the slots are aligned, the positioning spring automatically resets and snaps in place. No special tools are required throughout the process, which realizes the quick disassembly and assembly of the top plate and greatly improves the changeover efficiency of packaging box production of different specifications. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of a rapid demolding device for a pulp molded environmentally friendly packaging box proposed in this utility model;

[0029] Figure 2 This is a cross-sectional view of the lower mold of a rapid demolding device for a pulp molded environmentally friendly packaging box proposed in this utility model;

[0030] Figure 3 This invention provides a schematic diagram of the L-frame and fixing block for a rapid demolding device for molded pulp environmentally friendly packaging boxes.

[0031] Figure 4 This is a detailed anatomical view of the round rod and top plate of a rapid demolding device for a pulp molded environmentally friendly packaging box proposed in this utility model.

[0032] Legend:

[0033] 1. Lower mold; 2. L-frame; 3. Fixed block; 4. Moving plate; 5. Hinge rod; 6. Connecting plate; 7. Top plate; 8. Motor; 9. Cam; 10. Support block; 11. Return spring; 12. Support rod; 13. Round rod; 14. Round block; 15. Positioning spring; 16. Upper mold. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-3This utility model provides an embodiment of a rapid demolding device for pulp molded environmentally friendly packaging boxes, including a lower mold 1. An L-frame 2 is slidably connected through the inner wall of the lower mold 1. The lower mold 1 has corresponding slots for the L-frame 2, allowing the L-frame 2 to move laterally along the slots. A fixing block 3 is fixedly connected to the left end of the L-frame 2. The left end of the fixing block 3 is round and can fit against the surface of a cam 9. A movable plate 4 is fixedly connected to the front end of the L-frame 2. A connecting plate 6 is hinged to the top of the movable plate 4 via a hinge rod 5. The connecting plate 6 mainly supports and connects multiple top plates 7. A top plate 7 is detachably installed on the top of the connecting plate 6. The top plate 7 matches the corresponding opening of the mold cavity of the lower mold 1. This will affect the model. The outer wall of the lower mold 1 is equipped with a driving mechanism. The outer wall of the lower mold 1 is fixedly connected with a support block 10. The support block 10 mainly supports and connects the support rod 12. The inner wall of the support block 10 is threaded through and connected to the support rod 12. The outer wall of the support rod 12 is threaded. The support block 10 is provided with matching threads. The support rod 12 can be rotated to allow the support rod 12 and the support block 10 to fall off, which is convenient for the subsequent replacement of the return spring 11. At the same time, the support rod 12 can ensure that the return spring 11 will not undergo excessive deformation during compression. The left side wall of the support block 10 is elastically connected to the L frame 2 through the return spring 11. The top of the connecting plate 6 is provided with a connecting mechanism.

[0036] The drive mechanism includes a motor 8, which is fixedly connected to the outer wall of the lower mold 1 via a bracket. The motor 8 is a small motor that can rotate in both directions to meet the needs of the entire top plate. The output end of the motor 8 is fixedly connected to a cam 9, which is a mechanical part with a curved profile or groove.

[0037] Reference Figures 2-4 The connecting mechanism includes a round rod 13, which is fixedly connected to the top of the connecting plate 6. A round block 14 is slidably connected to the inner wall of the round rod 13. The round block 14 is circular and will move along the inner wall of the round rod 13 when compressed. There are two sets of round blocks 14, which are elastically connected by a positioning spring 15. When the round blocks 14 come together, they will compress the positioning spring 15. When resetting, the positioning spring 15 will move the round blocks 14 back to their original position. The round blocks 14 are inserted into the inner wall of the top plate 7. The top plate 7 has a slot to allow the round blocks 14 to be inserted into the slot. The round rod 13 passes through the inner wall of the lower mold 1. The lower mold 1 has a corresponding slot to allow the round rod 13 to move vertically along the slot.

[0038] Reference Figures 1-3The top of the movable plate 4 is hinged to one end of the hinge rod 5. Since the length of the hinge rod 5 is constant, when the movable plate 4 moves to the right with the hinge rod 5, the other end of the hinge rod 5 will push the connecting plate 6 upward. Conversely, when the movable plate 4 moves to the left with the hinge rod 5, the other end of the hinge rod 5 will pull the connecting plate 6 downward. The other end of the hinge rod 5 is hinged to the bottom end of the connecting plate 6. The movable plate 4 is slidably connected to the inner wall of the lower mold 1, and the connecting plate 6 is slidably connected to the inner wall of the lower mold 1. The mold 1 has a slot corresponding to the connecting plate 6, which allows the connecting plate 6 to move vertically along the slot. The outer wall of the cam 9 is in contact with the left end of the fixing block 3. The L-frame 2 and the fixing block 3 both pass through the outer wall of the support rod 12. The left side wall of the support block 10 is in contact with one end of the return spring 11. When the L-frame 2 moves to the right, it will compress the return spring 11. When resetting, the elastic force of the return spring 11 will carry the L-frame 2 to reset. The other end of the return spring 11 is in contact with the right side wall of the L-frame 2.

[0039] Working principle: When rapid demolding of the product is required, simply start motor 8 to drive cam 9 to rotate. When the protruding part of cam 9 contacts fixed block 3, it will push fixed block 3 and connected L-frame 2 to move laterally to the right along the groove of lower mold 1. During this process, L-frame 2 will compress return spring 11, and at the same time drive the front moving plate 4 to move to the right synchronously. Since the moving plate 4 and connecting plate 6 are hinged by hinge rod 5, when the moving plate moves to the right, the horizontal displacement will be converted into the vertical movement of connecting plate 6 through the angle change of the hinge rod. Finally, it will push the top plate 7 at the top of the connecting plate upward, so that the pulp is released. The molded packaging box detaches from the mold cavity of the lower mold 1, which can quickly complete the demolding action. At the same time, the rotation of the cam 9 driven by the motor 8 causes the fixed block 3 to move different distances when it contacts different surfaces of the cam 9, resulting in different ejection heights of the top plate 7. When the return spring 11 needs to be replaced, simply rotate the support rod 12 to disengage the support rod 12 from the support block 10. The space between the support rod 12 and the support block 10 allows the return spring 11 to be moved out for replacement. After installing the new return spring 11, twist the support rod 12 again to thread the support rod 12 into the inner wall of the support block 10.

[0040] When the top plate 7 needs to be replaced, simply put the entire top plate 7 in the ejector position, and pull the top plate 7 upwards by hand to make the inner wall groove of the top plate 7 press against the round block 14 and compress the positioning spring 15, so that the round block 14 is separated from the groove of the top plate 7. The installation is the same. Insert the new top plate 7 into the lower mold 1, so that the top plate 7 is inserted into the outer wall of the round rod 13. Use the bottom end of the top plate 7 to press against the round surface of the round block 14 and compress the positioning spring 15. After the round block 14 coincides with the groove of the top plate 7, the pushing force of the positioning spring 15 makes the round block 14 insert into the groove of the top plate 7.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rapid demolding device for molded pulp environmentally friendly packaging boxes, comprising a lower mold (1), characterized in that: The inner wall of the lower mold (1) is slidably connected to an L-frame (2). A fixing block (3) is fixedly connected to the left end of the L-frame (2). A moving plate (4) is fixedly connected to the front end of the L-frame (2). A connecting plate (6) is hinged to the top of the moving plate (4) via a hinge rod (5). A top plate (7) is detachably installed on the top of the connecting plate (6). A driving mechanism is provided on the outer wall of the lower mold (1). A support block (10) is fixedly connected to the outer wall of the lower mold (1). A support rod (12) is threadedly connected to the inner wall of the support block (10). The left side wall of the support block (10) is elastically connected to the L-frame (2) via a return spring (11). An upper mold (16) is provided at the top of the lower mold (1). A connecting mechanism is provided at the top of the connecting plate (6). The driving mechanism includes a motor (8), which is fixedly connected to the outer wall of the lower mold (1) by a bracket, and a cam (9) is fixedly connected to the output end of the motor (8).

2. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 1, characterized in that: The connecting mechanism includes a round rod (13), which is fixedly connected to the top of the connecting plate (6). A round block (14) is slidably connected to the inner wall of the round rod (13). Two sets of round blocks (14) are provided, and the two sets of round blocks (14) are elastically connected by a positioning spring (15).

3. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 2, characterized in that: The circular block (14) is inserted into the inner wall of the top plate (7).

4. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 2, characterized in that: The round rod (13) passes through the inner wall of the lower mold (1).

5. The rapid demolding device for a pulp molded environmentally friendly packaging box according to claim 1, characterized in that: The top end of the movable plate (4) is hinged to one end of the hinge rod (5), and the other end of the hinge rod (5) is hinged to the bottom end of the connecting plate (6).

6. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 1, characterized in that: The movable plate (4) is slidably connected to the inner wall of the lower mold (1).

7. The rapid demolding device for a pulp molded environmentally friendly packaging box according to claim 1, characterized in that: The connecting plate (6) is slidably connected to the inner wall of the lower mold (1).

8. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 1, characterized in that: The outer wall of the cam (9) is in contact with the left end of the fixing block (3).

9. The rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 1, characterized in that: Both the L-frame (2) and the fixing block (3) penetrate the outer wall of the support rod (12).

10. A rapid demolding device for pulp molded environmentally friendly packaging boxes according to claim 1, characterized in that: The left sidewall of the support block (10) is in contact with one end of the return spring (11), and the other end of the return spring (11) is in contact with the right sidewall of the L frame (2).

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