A packaging and edge sealing apparatus for processing plastic packaging articles

Abstract

The utility model belongs to the technical field of plastic packaging product edge sealing, and relates to a kind of packaging edge sealing equipment for plastic packaging product processing, by conveying mechanism, supporting mechanism, two edge sealing mechanisms and opening mechanism composition.Conveying mechanism realizes continuous conveying of packaging bag;Opening mechanism unfolds packaging bag mouth by electric cylinder, push rod and other components;Edge sealing mechanism completes bag mouth edge sealing using electric cylinder, heating machine and the like.Supporting mechanism is used to install and fix other components.The equipment operates cooperatively through each mechanism, effectively solves the problem of bag mouth unfolding and edge sealing in the edge sealing process of plastic packaging product, realizes efficient and accurate edge sealing operation, and improves packaging quality and production efficiency.

Description

Technical Field

[0001] This application relates to the field of edge sealing technology for plastic packaging products, specifically to a packaging edge sealing device for processing plastic packaging products. Background Technology

[0002] In the processing of plastic packaging products, edge sealing is a crucial step. Traditional edge sealing equipment has several problems. On the one hand, opening the bag mouth often relies on manual operation, which is inefficient and makes it difficult to ensure the bag mouth is fully extended. This can easily lead to folding, misalignment, and other issues during heat sealing, affecting packaging quality. On the other hand, the lack of effective positioning and clamping devices during the sealing process results in inaccurate sealing positions and poor sealing effects. Therefore, there is an urgent need for packaging edge sealing equipment that can automatically open the bag mouth, accurately position and stably clamp it, thereby achieving efficient and precise edge sealing. This would improve the production quality and efficiency of plastic packaging products and meet the market demand for high-quality packaging products. Summary of the Invention

[0003] In response to the aforementioned technical problems, this application addresses the issues of poor packaging quality caused by difficulties in effectively opening the bag opening and misalignment during heat sealing of plastic packaging products.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a packaging edge sealing device for processing plastic packaging products, characterized in that it includes a conveying mechanism, a supporting mechanism, two edge sealing mechanisms and a spreading mechanism, wherein the two edge sealing mechanisms are symmetrically arranged on the supporting mechanism.

[0005] The opening mechanism includes a second electric cylinder, a main push rod, an upper crossbar, an upper sliding rod, an upper spring, a lower sliding rod, a lower unfolding rod, and a lower crossbar. The second electric cylinder is fixedly installed on the support mechanism, and its output end is fixedly connected to the main push rod. The end of the main push rod away from the second electric cylinder is fixedly connected to the middle of the upper crossbar. The upper and lower crossbars are provided with two symmetrical sliding grooves. The lower sliding rod is sleeved on the upper sliding rod, and the upper sliding rod and the lower sliding rod are slidably connected. The upper sliding rod slides on the sliding groove of the upper crossbar, and the lower sliding rod slides on the sliding groove of the lower crossbar. The upper spring is sleeved on the upper sliding rod, and its two ends are fixedly connected to the upper and lower crossbars respectively. The lower unfolding rod is threaded on the lower unfolding rod. By inserting the lower unfolding rod into the opening of the packaging bag, the bag opening is opened by controlling the lower unfolding rod to move to both sides.

[0006] The sealing mechanism includes a first electric cylinder, a side push rod, a side slide rod, a side spring, a side clamping plate, a heating machine, a heating head, and a sealing plate. The first electric cylinder and the heating machine are fixedly mounted on the support mechanism. The heating machine is connected to the heating head via an electric wire. The sealing plate is mounted on the heating head. The heating head is fixedly mounted on the side push rod. The side push rod is fixedly mounted on the output end of the first electric cylinder. The side slide rod is fixedly mounted on the side clamping plate. A side spring is sleeved on the side slide rod. The end of the side slide rod near the side push rod slides in the through hole of the side push rod. The two ends of the side spring are fixedly connected to the side push rod and the side clamping plate, respectively. The side clamping plate fixes the packaging bag near the bag opening, and the sealing plate seals the bag opening.

[0007] Preferably, the support mechanism includes an outer support plate, a lower support rod, a lower support plate, an upper support plate, and an upper support rod. The outer support plate is fixedly mounted on the conveying mechanism. The lower support plate is fixedly connected to two lower support rods, which are fixedly installed on the inner wall of the outer support plate. The upper support rod is fixedly installed on the upper support plate, and the upper support plate is fixedly installed on the outer support plate. A convex shaft is provided on the upper support rod.

[0008] Preferably, an outer rotating ring is rotatably mounted on the main push rod. A turntable is fixedly mounted on the end of the outer rotating ring near the upper crossbar. Two convex shafts are provided on the end of the turntable near the upper crossbar. An upper push rod is rotatably connected to each convex shaft. An upper connecting block is sleeved on the end of the upper sliding rod near the turntable. A convex shaft is provided on the upper connecting block. The convex shaft is rotatably connected to the end of the upper push rod away from the turntable. By rotating the outer rotating ring, the two upper sliding rods are pushed to slide on the sliding groove of the upper crossbar.

[0009] Preferably, the outer rotating ring is provided with a sliding groove, which includes a rotating groove and two vertical grooves. The two vertical grooves are respectively provided at the two ends of the rotating groove. The rotating groove has an arc of ninety degrees. The convex shaft of the upper support rod slides on the sliding groove of the outer rotating ring, and the rotation angle of the outer rotating ring is limited by the sliding groove of the outer rotating ring.

[0010] Preferably, a side support plate is fixedly provided at both ends of the side push rod. The two side support plates are installed at different positions at their ends. A side push frame is fixedly provided on each side support plate. The side push frame is provided with an inclined surface. The side push frames on the two edge sealing mechanisms are arranged alternately.

[0011] The technical solution provided in this application has the following advantages compared with the prior art:

[0012] 1. The conveying mechanism of this application uses a motor to drive the drum to rotate via a reducer and coupling, and is equipped with idlers, tensioning devices, etc., which can realize the stable and continuous conveying of packaging bags, providing a reliable foundation for subsequent opening and sealing operations, and improving overall production efficiency.

[0013] 2: The opening mechanism of this application can automatically insert the lower opening rod into the opening of the packaging bag and open the bag opening through the coordinated movement of a series of components such as the second electric cylinder and the main push rod. This avoids the tediousness and instability of manual operation and can effectively prevent the packaging bag from folding or misaligning during heat sealing, thereby improving the packaging quality.

[0014] 3. The sealing mechanism of this application is equipped with side clamps, side springs, and other structures. Before heat sealing, the side clamps can tightly hold the lower end of the packaging bag opening, effectively preventing misaligned heat sealing and ensuring the accuracy and quality of the sealing. At the same time, the heating machine, heating head, and related temperature control and auxiliary structures ensure that the sealing plate can be stably maintained at a suitable heat sealing temperature, further improving the sealing effect.

[0015] 4: This application, through the ingenious design of the outer rotating ring, turntable, and upper push rod, enables the unfolding mechanism to further push the upper sliding rod after the lower unfolding rod is inserted into the packaging bag, so that the lower unfolding rod is inserted into the packaging bag a certain distance, thereby fully unfolding the packaging bag and providing better conditions for subsequent sealing.

[0016] 5: During the sealing process, this application, through the cooperation of components such as side push rods, side support plates, and side push frames, can promptly release the lower unfolding rod from the packaging bag after the side clamping plate holds the packaging bag, thus avoiding interference with the heat sealing of the sealing plate and ensuring the smooth progress of the sealing operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application;

[0018] Figure 2 This is a front view of the edge sealing mechanism in this application;

[0019] Figure 3 This is a structural diagram of the edge sealing mechanism and the spreading mechanism in this application;

[0020] Figure 4 This is a schematic diagram of the structure of the mechanism supporting this application;

[0021] Figure 5 This is a top view of the sealing mechanism and the opening mechanism of this application;

[0022] Figure 6 This is a structural schematic diagram of the side pusher frame of this application.

[0023] In the diagram: 100-Conveying mechanism; 200-Supporting mechanism; 201-Outer support plate; 202-Lower support rod; 203-Upper support plate; 204-Upper support rod; 205-Lower support plate; 300-Edge sealing mechanism; 301-Heating machine; 302-Heating head; 303-Edge sealing plate; 304-First electric cylinder; 305-Side push rod; 306-Side slide rod; 307-Side spring; 308-Side clamping plate; 309- Side support plate; 310-Side push frame; 400-Spreading mechanism; 401-Second electric cylinder; 402-Main push rod; 403-Outer rotating ring; 404-Turntable; 405-Upper crossbar; 406-Upper push rod; 407-Upper connecting block; 408-Upper sliding rod; 409-Upper spring; 410-Lower sliding rod; 411-Lower unfolding rod; 412-Lower crossbar; 413-Lower sliding plate; 414-Lower convex shaft; 415-Lower buffer sleeve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] like Figures 1 to 6 As shown, a packaging sealing device for processing plastic packaging products includes a conveying mechanism 100, a support mechanism 200, two sealing mechanisms 300, and a spreading mechanism 400. The two sealing mechanisms 300 are symmetrically arranged on the support mechanism 200. Specifically, the conveying mechanism 100 includes a reducer, a coupling, a drive roller, idlers, a tensioning device (including a tensioning roller), a frame, and a baffle plate. The working principle of the conveying mechanism 100 is as follows: the motor drives the roller to rotate via the reducer and coupling, which in turn drives the belt to move through friction. The redirecting roller guides the belt to form a closed loop. The idlers support the belt to reduce resistance, the tensioning device maintains belt tension to prevent slippage, and the baffle plate prevents material spillage. The material is placed on the belt and moves with it, completing the continuous conveying of the packaging bags.

[0027] The spreading mechanism 400 includes a second electric cylinder 401, a main push rod 402, an upper crossbar 405, an upper sliding rod 408, an upper spring 409, a lower sliding rod 410, a lower unfolding rod 411, and a lower crossbar 412. The second electric cylinder 401 is fixedly mounted on the support mechanism 200. The output end of the second electric cylinder 401 is fixedly connected to the main push rod 402. The end of the main push rod 402 away from the second electric cylinder 401 is fixedly connected to the middle of the upper crossbar 405. Two symmetrical sliding grooves are provided on the upper crossbar 405 and the lower crossbar 412. The lower sliding rod 410 is sleeved on... On the upper slide rod 408, the upper slide rod 408 is slidably connected to the lower slide rod 410. The upper slide rod 408 slides on the groove of the upper cross rod 405, and the lower slide rod 410 slides on the groove of the lower cross rod 412. The upper spring 409 is sleeved on the upper slide rod 408. The two ends of the upper spring 409 are fixedly connected to the upper cross rod 405 and the lower cross rod 412 respectively. The lower unfolding rod 411 is threaded on the lower unfolding rod 412. By inserting the lower unfolding rod 411 into the opening of the packaging bag, the bag opening is unfolded by controlling the lower unfolding rod 411 to move to both sides.

[0028] Specifically, after the packaging bag is conveyed to the predetermined position, the second electric cylinder 401 is started by the electronic control system, driving the main push rod 402 to move towards the packaging bag. As a result, the main push rod 402 pushes the upper crossbar 405 to move downward. The upper sliding rod 408, upper spring 409, lower sliding rod 410 and lower unfolding rod 411 on the upper crossbar 405 also approach the packaging bag and are inserted into the packaging bag. The electronic control system is set so that when the lower unfolding rod 411 just enters the packaging bag opening, the two side clamps 308 are controlled to move to both sides on the sliding groove of the upper crossbar 405, thereby driving the two lower sliding rods 410 to move to both sides on the sliding groove of the lower crossbar 412. Then, the lower unfolding rod 411 unfolds the packaging bag, so that the surface of the packaging bag is unfolded, avoiding folding during sealing, i.e., misaligned heat sealing on both sides.

[0029] The edge-sealing mechanism 300 includes a first electric cylinder 304, a side push rod 305, a side slide rod 306, a side spring 307, a side clamping plate 308, a heating machine 301, a heating head 302, and an edge-sealing plate 303. The first electric cylinder 304 and the heating machine 301 are fixedly mounted on the support mechanism 200. The heating machine 301 is connected to the heating head 302 via an electric wire. The edge-sealing plate 303 is mounted on the heating head 302. The heating head 302 is fixedly mounted on the side push rod 305. The side push rod 306... 5 is fixedly installed on the output end of the first electric cylinder 304. The side slide rod 306 is fixedly installed on the side clamping plate 308. The side slide rod 306 is fitted with a side spring 307. The end of the side slide rod 306 near the side push rod 305 slides on the through hole of the side push rod 305. The two ends of the side spring 307 are fixedly connected to the side push rod 305 and the side clamping plate 308 respectively. The side clamping plate 308 fixes the packaging bag near the bag opening. The sealing plate 303 seals the bag opening.

[0030] Specifically, the heating element 301, heating head 302, and edge sealing plate 303 are just basic components. Related structures also include a temperature controller (connecting the heating element 301 to the temperature sensor to regulate the heating temperature), a temperature sensor (attached to the edge sealing plate 303 to monitor the temperature in real time), a positioning slot (fixing the edge sealing plate 303 on the heating head 302 to prevent displacement), a heat insulation cover (enclosing the heating head 302 to reduce heat loss and prevent burns), wiring terminals (securely connecting the wires to the heating head 302), and thermal grease (filling the gap between the heating head 302 and the edge sealing plate 303 to enhance heat conduction). Working principle: The heating machine 301 supplies power to the heating head 302 through the wiring terminal. The temperature controller adjusts the heating power according to the temperature of the heating head 302 fed back by the temperature sensor to stabilize the temperature at the set value. The heat is efficiently transferred to the edge sealing plate 303 through the thermal grease. The positioning slot ensures that the edge sealing plate 303 is accurately aligned. After the edge sealing material comes into contact with the high temperature edge sealing plate 303, the heat sealing is completed. The heat insulation cover reduces energy consumption and ensures operational safety.

[0031] In use, after the packaging bag is stretched by 311, the heating machine 301 is started by the electronic control system. The heating head 302 transfers heat energy to the sealing plate 303, enabling it to be heat-sealed. At the same time, the first electric cylinder 304 is activated. The output end of the first electric cylinder 304 pushes the side push rod 305 closer to the packaging bag. The side push rod 305, through the elastic force of the side spring 307, pushes the side clamping plate 308 to contact and push the packaging bag. After the side clamping plate 308 contacts the packaging bag, it continues to push the side push rod 305, which compresses the side spring 307. The side slide rod 306 slides on the through hole of the side push rod 305, so that the two side clamping plates 308 are in close contact, and the lower end of the packaging bag opening is stably clamped, thereby ensuring that the bag opening is not misaligned during heat sealing.

[0032] like Figure 2 As shown, the support mechanism 200 includes an outer support plate 201, a lower support rod 202, a lower support plate 205, an upper support plate 203, and an upper support rod 204. The outer support plate 201 is fixedly mounted on the conveying mechanism 100. The lower support plate 205 is fixedly connected to two lower support rods 202, which are fixedly installed on the inner wall of the outer support plate 201. The upper support rod 204 is fixedly installed on the upper support plate 203, which is fixedly installed on the outer support plate 201. A convex shaft is provided on the upper support rod 204. Specifically, the lower support plates 205 on both sides limit the packaging bag conveyed by the conveying mechanism 100, ensuring that the packaging bag can move to a predetermined position for heat sealing.

[0033] like Figure 3 , Figure 4 and Figure 6As shown, an outer rotating ring 403 is rotatably mounted on the main push rod 402. A turntable 404 is fixedly installed on one end of the outer rotating ring 403 near the upper crossbar 405. Two convex shafts are provided on the end of the turntable 404 near the upper crossbar 405. An upper push rod 406 is rotatably connected to each convex shaft. An upper connecting block 407 is sleeved on one end of the upper sliding rod 408 near the turntable 404. A convex shaft is provided on the upper connecting block 407. The convex shaft is rotatably connected to the end of the upper push rod 406 away from the turntable 404. By rotating the outer rotating ring 403, the two upper sliding rods 408 are pushed to slide on the sliding groove of the upper crossbar 405.

[0034] like Figure 4 As shown, the outer rotating ring 403 is provided with a sliding groove, which includes a rotating groove and two vertical grooves. The two vertical grooves are respectively provided at the two ends of the rotating groove. The rotating groove has an arc of ninety degrees. The convex shaft of the upper support rod 204 slides on the sliding groove of the outer rotating ring 403, and the rotation angle of the outer rotating ring 403 is limited by the sliding groove of the outer rotating ring 403.

[0035] like Figure 6 As shown, this is the initial state. After the packaging bag moves to the predetermined position, the main push rod 402 is controlled to move downward. As a result, the main push rod 402 drives the outer rotating ring 403 downward. The outer rotating ring 403 rotates 90 degrees due to the restriction of the main push rod 402. This pushes the upper push rod 406 through the turntable 404. The upper push rod 406 pushes the upper sliding rod 408 to the end of the groove of the upper horizontal bar 405. During this process, the upper sliding rod 408 drives the lower sliding rod 410 to slide on the groove of the lower horizontal bar 412.

[0036] Specifically, when the main push rod 402 moves downward, the convex shaft on the upper support rod 204 slides on the groove of 103. At the beginning of the movement, before the lower unfolding rod 411 is inserted into the packaging bag, the convex shaft of the upper support rod 204 slides in the lower vertical groove of the outer rotating ring 403. When the lower unfolding rod 411 is just inserted into the packaging, the convex shaft of the upper support rod 204 enters the rotating groove in the middle of the outer rotating ring 403. Because the upper support rod 204 is fixed... The outer rotating ring 403 rotates on the main push rod 402, and then the outer rotating ring 403 pushes the two upper push rods 406 through the turntable 404, so that the upper push rods 406 push the upper sliding rod 408 on the upper crossbar 405 through the upper connecting block 407, thereby realizing the unfolding of the lower unfolding rod 411 inside the packaging bag. During this process, the lower unfolding rod 411 continues to move steadily downward, so that the lower unfolding rod 411 inserts into the packaging bag a certain distance, allowing the packaging bag to fully unfold.

[0037] For example, 3. Figure 5 and Figure 6As shown, a side support plate 309 is fixedly installed at both ends of the side push rod 305. The two side support plates 309 are installed at different positions at their ends. A side push frame 310 is fixedly installed on each side support plate 309. The side push frame 310 is provided with an inclined surface. The side push frames 310 on the two edge sealing mechanisms 300 are arranged alternately.

[0038] Specifically, each end of the lower crossbar 412 is provided with a lower sliding plate 413, which slides vertically on the upper crossbar 405 to support the lower crossbar 412. When the side push rods 305 on both sides approach each other, the side support plates 309 on the side push rods 305 approach and contact each other. Through staggered arrangement, they can be inserted into each other, so that the side push brackets 310 on the side support plates 309 on both sides can simultaneously contact the lower buffer sleeve 415 on the lower convex shaft 414, thereby pushing the lower crossbar 412 to move upward, so that the lower crossbar 412 compresses the upper spring 409 upward, so that the lower sliding rod 410 slides on the upper sliding rod 408, and the lower sliding plate 413 slides on the upper crossbar 405. Then, under the clamping of the packaging bag by the side clamping plate 308, the lower unfolding rod 411 is separated from the packaging bag, thereby avoiding interference from the lower unfolding rod 411 when the sealing plate 303 contacts the packaging bag.

[0039] After the packaging bag is moved to the designated location, the work steps are as follows:

[0040] First, insert the lower unfolding rod 411 into the packaging bag, and then unfold the bag opening.

[0041] The second step involves controlling the side clamping plate 308 to contact the packaging bag and compressing the side spring 307 through the continuous movement of the side push rod 305, so that the side clamping plates 308 on both sides are in close contact and clamp the packaging bag.

[0042] Third, continue to move the side push rod 305. The side support plate 309 on the side push rod 305 pushes the inclined surface of the side push frame 310 to push the lower buffer sleeve 415, so that the lower crossbar 412 drives the sliding rod 410 to move upward, thereby driving the lower unfolding rod 411 to detach from the packaging bag.

[0043] Fourth step, continue to move the side push rod 305. The side push rod 305 drives the heating head 302 to approach the packaging bag, so that the sealing plates 303 on both sides of the heating head 302 come into contact with each other, and heat seal the opening of the packaging bag.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A packaging edge sealing device for processing plastic packaging products, characterized in that, It includes a conveying mechanism (100), a support mechanism (200), two edge sealing mechanisms (300) and a spreading mechanism (400), with the two edge sealing mechanisms (300) symmetrically arranged on the support mechanism (200); The spreading mechanism (400) includes a second electric cylinder (401), a main push rod (402), an upper crossbar (405), an upper sliding rod (408), an upper spring (409), a lower sliding rod (410), a lower unfolding rod (411), and a lower crossbar (412). The second electric cylinder (401) is fixedly mounted on the support mechanism (200). The output end of the second electric cylinder (401) is fixedly connected to the main push rod (402). The end of the main push rod (402) away from the second electric cylinder (401) is fixedly connected to the middle of the upper crossbar (405). Two symmetrical sliding grooves are provided on the upper crossbar (405) and the lower crossbar (412). The lower sliding rod (410) The upper slide rod (408) is slidably connected to the lower slide rod (410). The upper slide rod (408) slides on the groove of the upper cross rod (405), and the lower slide rod (410) slides on the groove of the lower cross rod (412). The upper spring (409) is sleeved on the upper slide rod (408). The two ends of the upper spring (409) are fixedly connected to the upper cross rod (405) and the lower cross rod (412) respectively. The lower unfolding rod (411) is threaded on the lower unfolding rod (411). By inserting the lower unfolding rod (411) into the opening of the packaging bag, the bag opening is unfolded by controlling the lower unfolding rod (411) to move to both sides. The edge sealing mechanism (300) includes a first electric cylinder (304), a side push rod (305), a side slide rod (306), a side spring (307), a side clamping plate (308), a heating machine (301), a heating head (302), and an edge sealing plate (303). The first electric cylinder (304) and the heating machine (301) are fixedly mounted on the support mechanism (200). The heating machine (301) is connected to the heating head (302) via a wire. The edge sealing plate (303) is mounted on the heating head (302). The heating head (302) is fixedly mounted on the side push rod (305). The push rod (305) is fixedly installed on the output end of the first electric cylinder (304), the side slide rod (306) is fixedly installed on the side clamping plate (308), and the side spring (307) is sleeved on the side slide rod (306). The end of the side slide rod (306) near the side push rod (305) slides on the through hole of the side push rod (305). The two ends of the side spring (307) are fixedly connected to the side push rod (305) and the side clamping plate (308) respectively. The side clamping plate (308) fixes the packaging bag near the bag opening, and the sealing plate (303) seals the bag opening.

2. The packaging sealing equipment for processing plastic packaging products according to claim 1, characterized in that, The support mechanism (200) includes an outer support plate (201), a lower support rod (202), a lower support plate (205), an upper support plate (203), and an upper support rod (204). The outer support plate (201) is fixedly mounted on the conveying mechanism (100). The lower support plate (205) is fixedly connected to two lower support rods (202). The two lower support rods (202) are fixedly mounted on the inner wall of the outer support plate (201). The upper support rod (204) is fixedly mounted on the upper support plate (203). The upper support plate (203) is fixedly mounted on the outer support plate (201). A convex shaft is provided on the upper support rod (204).

3. The packaging sealing equipment for processing plastic packaging products according to claim 1, characterized in that, An outer rotating ring (403) is rotatably mounted on the main push rod (402). A turntable (404) is fixedly mounted on one end of the outer rotating ring (403) near the upper crossbar (405). Two convex shafts are provided on one end of the turntable (404) near the upper crossbar (405). An upper push rod (406) is rotatably connected to each convex shaft. An upper connecting block (407) is sleeved on one end of the upper sliding rod (408) near the turntable (404). A convex shaft is provided on the upper connecting block (407). The convex shaft is rotatably connected to the end of the upper push rod (406) away from the turntable (404). By rotating the outer rotating ring (403), the two upper sliding rods (408) are pushed to slide on the groove of the upper crossbar (405).

4. The packaging sealing equipment for processing plastic packaging products according to claim 3, characterized in that, The outer rotating ring (403) is provided with a sliding groove, which includes a rotating groove and two vertical grooves. The two vertical grooves are respectively located at the two ends of the rotating groove. The rotating groove has an arc of ninety degrees. The convex shaft of the upper support rod (204) slides on the sliding groove of the outer rotating ring (403). The rotation angle of the outer rotating ring (403) is limited by the sliding groove of the outer rotating ring (403).

5. The packaging sealing equipment for processing plastic packaging products according to claim 1, characterized in that, A side support plate (309) is fixedly installed at both ends of the side push rod (305). The two side support plates (309) are installed at different positions at their ends. A side push frame (310) is fixedly installed on each side support plate (309). An inclined surface is provided on the side push frame (310). The side push frames (310) on the two edge sealing mechanisms (300) are staggered.

Images