Plastic bag packaging machine
By designing a gear and rack structure and a motor-driven plastic bag packing machine, the problem of deformation caused by uneven force on plastic bags during the packing process was solved, thereby improving packing quality and efficiency and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING LIANFA PLASTIC TECH CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-05-26
AI Technical Summary
Plastic bags are prone to deformation during the packing process due to uneven stress, resulting in loose binding and affecting packing quality and efficiency.
A plastic bag packing machine was designed, which adopts a gear and rack structure and motor drive. The gear meshing achieves precise centering and position restriction of the plastic bag. Combined with the cooperation of the return spring and guide rod, it ensures neat and stable binding. The machine also achieves synchronous operation of multiple structures through a single power input.
It improves the quality and efficiency of plastic bag packaging, ensures neat and stable binding, reduces energy consumption, and enhances the safety and consistency of equipment use.
Smart Images
Figure CN224277708U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging machine technology, and in particular to a packaging machine for plastic bags at the factory. Background Technology
[0002] In the plastics processing industry, plastic bags are a widely used packaging material. Their production process typically includes multiple steps such as raw material proportioning, melt extrusion, blow molding, cooling and shaping, traction stretching, printing (if required), and cutting and slitting.
[0003] After completing the above production process, the plastic bags need to be packaged before leaving the factory. This is because individual plastic bags are thin and loose in volume; if they were transported, sold, or used directly, they would not only take up a lot of space, leading to low transportation efficiency, but also easily scatter and become messy, increasing management difficulties. Therefore, the industry usually groups a certain number of plastic bags together and uses a packing machine to tie them with binding material, keeping the group of plastic bags neat and compact, which facilitates subsequent warehousing, logistics, retail distribution, and user use.
[0004] However, due to the soft texture and loose structure of plastic bags, during the packaging process, when the plastic bags are placed on the designated station of the packaging machine, they are prone to irregular deformation due to uneven force during the application of binding force. This deformation can result in localized dents, wrinkles, or overall misalignment. This deformation directly affects the winding path and tightening effect of the cable ties, leading to problems such as uneven tightness and misalignment of the bundled plastic bags. This not only affects the neatness of the product's appearance but may also cause the bags to come apart during subsequent handling or transportation due to insecure binding, reducing the quality and efficiency of the packaging operation. Utility Model Content
[0005] To overcome the shortcomings, the technical problem is: to provide a plastic bag packing machine that can neatly pack plastic bags for shipment, aiming to improve the quality and efficiency of packing operations.
[0006] The technical solution is as follows: a plastic bag packaging machine, comprising: a main body with a binding groove for bundling plastic bags; a feeding platform fixedly connected to the main body, located in front of the binding groove; columns fixedly connected to both sides of the feeding platform; a first rack slidably connected to the columns, the first rack being vertically displaced; a pressure plate fixedly connected between the tops of the two first racks; a first gear rotatably connected to the feeding platform, each first gear meshing with each first rack; a second gear rotatably connected to the feeding platform; a second rack slidably connected to the feeding platform, the second rack meshing with the second gear; a guide rod fixedly connected to the feeding platform; a push plate slidably connected to the middle of the feeding platform, the push plate moving back and forth, the push plate slidingly engaging with the guide rod, and the second rack fixed to the push plate; both the first gear and the second gear are connected to a power drive source.
[0007] Furthermore, it also includes: a mounting plate fixedly connected to the loading platform; a motor fixedly connected to the mounting plate; a mounting shaft rotatably connected to the loading platform, the mounting shaft being fixed to the output end of the motor, and the mounting shaft being coaxially fixed to the second gear and the two first gears; and a controller fixedly connected to the loading platform, the controller being electrically connected to the motor.
[0008] Furthermore, the first gear is rotatably connected to the mounting shaft, and also includes: a top block slidably connected to the mounting shaft, with a groove in the first gear that fits the top block; and a first return spring fixedly connected between the top block and the mounting shaft, the first return spring inserting the top block into the groove in the first gear to fix the relative position between the first gear and the mounting shaft.
[0009] Furthermore, it also includes a second reset spring sleeved on the guide rod, one end of which is fixed to the push plate and the other end of which is fixed to the loading platform.
[0010] Furthermore, it also includes: an anti-accidental touch sleeve that is fixedly connected to the outer ring of the controller button.
[0011] Furthermore, it also includes a guide frame fixedly connected to the main body, used to guide the plastic bag to be centered.
[0012] The beneficial effects are as follows: This utility model automatically pushes the plastic bag to precisely align with the binding groove and uses a pressure plate to restrict the position of the plastic bag, creating stable working conditions for the binding operation of the main body, ensuring neat and stable binding, and achieving a dual improvement in the quality and efficiency of the packaging operation; This utility model uses a motor and mounting shaft to uniformly control the rotation of the first gear and the second gear, achieving synchronous operation of multiple structures through a single power input, optimizing the power structure, improving energy utilization efficiency, and reducing energy consumption; This utility model uses a deformable second return spring to store energy, quickly returning the second rack to the engagement preparation position after the second gear and the second rack separate, improving the rapid reset engagement capability after disengagement and enhancing the stability of the structural fit. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a partial structural cross-sectional view of the present invention.
[0015] Figure 3 This is a cross-sectional view of the connection structure between the top block and the first reset spring of this utility model.
[0016] Figure 4 This utility model Figure 2 A magnified view of a portion of point A in the middle.
[0017] Component names and serial numbers in the diagram: 1_Main body, 2_Feeding platform, 3_Column, 4_Mounting plate, 5_Motor, 51_Controller, 6_Mounting shaft, 7_First rack, 71_Pressure plate, 8_First gear, 9_Top block, 10_First return spring, 11_Second gear, 12_Second rack, 13_Guide rod, 14_Push plate, 15_Second return spring, 16_Anti-accidental contact sleeve, 17_Guide frame. Detailed Implementation
[0018] 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.
[0019] Example: Packaging machine for plastic bags at the factory, such as Figures 1-4As shown, it includes: a main body 1, which has a binding groove for tying plastic bags. When a plastic bag is placed on the binding groove, the main body 1 moves to tie the plastic bag from the position of the binding groove; a loading platform 2 fixedly installed on the front side of the main body 1, located in front of the binding groove; columns 3 fixedly installed on the left and right sides of the upper part of the loading platform 2; first racks 7 slidably installed in the two columns 3, with their movement direction being vertical; a pressure plate 71 fixedly installed between the tops of the two first racks 7; and first gears 8 rotatably installed on the left and right sides of the bottom of the loading platform 2, with the two first gears 8 respectively engaging with the left and right sides of the loading platform 2. The first rack 7 corresponding to the right position is engaged; the second gear 11 is rotatably installed on the middle side of the bottom of the loading platform 2; the second rack 12 is slidably installed on the bottom of the loading platform 2, and its movement direction is back and forth, and the second rack 12 is engaged with the second gear 11; the guide rod 13 is fixedly installed in the middle of the loading platform 2, and the guide rod 13 is distributed in the back and forth direction; the push plate 14 is slidably installed in the middle of the loading platform 2, and its movement direction is back and forth, the push plate 14 is slidably engaged with the guide rod 13, and the second rack 12 is fixed with the push plate 14; the first gear 8 and the second gear 11 are both connected to a power drive source to realize electric drive rotation.
[0020] Place the plastic bag to be packaged flat on the loading platform 2, start the power drive source, and control the rotation of the first gear 8 and the second gear 11: the second gear 11, through meshing with the second rack 12, controls the push plate 14 to move backward, pushing the plastic bag through the binding groove on the main body 1 until the rear of the plastic bag contacts the rear edge of the main body 1. At this time, the second rack 12 and the second gear 11 separate, the push plate 14 no longer moves, and the middle of the plastic bag is precisely aligned with the binding groove; the first gear 8 drives the first rack 7 to move down, driving the pressure plate 71 to press down on the plastic bag that has been positioned, restricting the position of the plastic bag, thereby creating stable working conditions for the binding operation of the main body 1, ensuring neat and stable binding, and achieving a dual improvement in the quality and efficiency of the packaging operation.
[0021] like Figure 1 and Figure 2 As shown, a mounting plate 4 is fixedly installed on the bottom right side of the loading platform 2; a motor 5 is fixedly installed on the mounting plate 4; a mounting shaft 6 is rotatably installed on the bottom of the loading platform 2, and the right end of the mounting shaft 6 is fixed to the output end of the motor 5 using a coupling. The mounting shaft 6 is coaxially fixed with the second gear 11 and the two first gears 8, thereby providing rotational driving force; a controller 51 is fixedly installed on the loading platform 2, and the controller 51 is electrically connected to the motor 5 to realize control.
[0022] Starting motor 5 allows the first gear 8 and the second gear 11 to rotate synchronously via mounting shaft 6. This enables the synchronous operation of multiple structures through a single power input, thereby optimizing the power structure, improving energy utilization efficiency, and reducing energy consumption.
[0023] like Figure 2 and Figure 3 As shown, the first gear 8 is rotatably mounted on the mounting shaft 6, and also includes: a top block 9 slidably mounted on the mounting shaft 6, with a groove in the first gear 8 that fits the top block 9; and a first return spring 10 fixedly mounted between the top block 9 and the mounting shaft 6, the first return spring 10 inserting the top block 9 into the groove in the first gear 8, so as to the relative position between the first gear 8 and the mounting shaft 6.
[0024] When motor 5 is running, top block 9 is inserted into the slot in first gear 8, enabling mounting shaft 6 to drive first gear 8 to rotate. If motor 5 is not turned off in time after pressure plate 71 has pressed onto plastic bag, repeated occurrences may damage the output shaft of motor 5. Therefore, by using top block 9, when first rack 7 can no longer move, but first gear 8 is still controlled to rotate, the slot in first gear 8 will squeeze top block 9 back into mounting shaft 6, and first return spring 10 will be compressed, so that mounting shaft 6 rotates freely relative to first gear 8, thus preventing rotational torque from being transmitted to the output shaft of motor 5 and damaging it, thereby improving the safety of motor 5.
[0025] like Figure 2 and Figure 4 As shown, it also includes: a second return spring 15 sleeved on the guide rod 13, one end of which is fixed to the push plate 14 and the other end is fixed to the loading platform 2; when the second rack 12 moves, the second return spring 15 deforms and stores energy. Once the second gear 11 separates from the second rack 12, the second return spring 15 will reset the second rack 12 to the engagement preparation position. In this way, when the second gear 11 changes direction, the disengaged second rack 12 and the second gear 11 can quickly resume engagement. It should be noted that when the second rack 12 separates from the second gear 11, the movement trajectory of the second rack 12 under the action of the second return spring 15 is decoupled from the direction of continued rotation of the second gear 11. Therefore, the continued rotation of the second gear 11 will not be affected by the reset process of the disengaged second rack 12.
[0026] like Figure 1 and Figure 2 As shown, it also includes: an anti-accidental touch sleeve 16 fixedly installed on the outer ring of the button of the controller 51. The anti-accidental touch sleeve 16 forms a deep press protection structure for the button of the controller 51. A specific inward pressure must be applied to trigger the controller 51, thereby greatly reducing the risk of the controller 51 being accidentally touched; and a guide frame 17 fixedly installed on the platform of the main body 1. The guide frame 17 is located on the rear side of the binding groove and is used to guide the plastic bag to be centered, so that the plastic bag can achieve automatic centering function during the pushing process, thereby improving the consistency of the packaged finished product.
[0027] 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 principle 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. A plastic bag off-line packing machine characterized by, include: The main body (1) is provided with a binding groove for tying plastic bags; a loading platform (2) is fixedly connected to the main body (1) and is located in front of the binding groove; columns (3) are fixedly connected to both sides of the loading platform (2); a first rack (7) is slidably connected to the column (3) and the first rack (7) is vertically displaced; a pressure plate (71) is fixedly connected between the tops of the two first racks (7); a first gear (8) is rotatably connected to the loading platform (2) and each first gear (8) meshes with each first rack (7); The second gear (11) is movably connected to the loading platform (2); the second rack (12) is slidably connected to the loading platform (2), and the second rack (12) meshes with the second gear (11); the guide rod (13) is fixedly connected to the loading platform (2); the push plate (14) is slidably connected to the middle of the loading platform (2), the push plate (14) moves back and forth, the push plate (14) and the guide rod (13) slide together, and the second rack (12) is fixed to the push plate (14); the first gear (8) and the second gear (11) are both connected to a power drive source.
2. The plastic bag off-packer of claim 1, wherein, Also includes: A mounting plate (4) is fixedly connected to the loading platform (2); a motor (5) is fixedly connected to the mounting plate (4); a mounting shaft (6) is rotatably connected to the loading platform (2), the mounting shaft (6) is fixed to the output end of the motor (5), and the mounting shaft (6) is coaxially fixed to the second gear (11) and the two first gears (8); a controller (51) is fixedly connected to the loading platform (2), and the controller (51) is electrically connected to the motor (5).
3. The plastic bag off-packing machine according to claim 2, wherein, The first gear (8) is rotatably connected to the mounting shaft (6) and also includes: a top block (9) slidably connected to the mounting shaft (6), and a groove adapted to the top block (9) is provided in the first gear (8); a first return spring (10) is fixedly connected between the top block (9) and the mounting shaft (6), and the first return spring (10) inserts the top block (9) into the groove in the first gear (8) to fix the relative position between the first gear (8) and the mounting shaft (6).
4. The plastic bag packaging machine according to claim 3, characterized in that, Also includes: The second reset spring (15) is sleeved on the guide rod (13), with one end fixed to the push plate (14) and the other end fixed to the loading platform (2).
5. The plastic bag packaging machine according to claim 4, characterized in that, Also includes: An anti-accidental touch sleeve (16) is fixedly connected to the outer ring of the button on the controller (51).
6. The plastic bag packaging machine according to claim 5, characterized in that, Also includes: A guide frame (17) is fixedly connected to the main body (1) to guide the plastic bag to be centered.