Device for thermoplastic forming of plastic flower

Abstract

The utility model relates to the technical field of plastic flower production, and discloses a device for thermoplastic forming of plastic flowers, which comprises a base, a connecting plate fixed on the top of the base, a lower hot-pressing block arranged on the base, and an upper hot-pressing block arranged on the connecting plate. A module is slidably arranged on the lower hot-pressing block and located between the lower hot-pressing block and the upper hot-pressing block. Plastic flower model holes are formed in the modules; two guide blocks are fixedly arranged on the base, and the module is in limiting sliding fit with the two guide blocks; a demolding mechanism is arranged on the base, and the output end of the demolding mechanism corresponds to a model hole in the module and is used for demolding; the lower pressing block and the module are in transmission connection through a feeding linkage assembly, and the feeding linkage assembly is used for driving the module to slide on the lower pressing block and the two guide blocks in a reciprocating mode. The module is driven by the feeding linkage assembly to slide in a reciprocating mode, automatic feeding is achieved, the demolding mechanism conducts automatic demolding on formed plastic flowers in the model holes of the module, the automation degree is high, the production efficiency is high, the personnel safety is guaranteed, and the accident risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic flower production, in particular to a device for thermoplastic molding of plastic flowers. Background Art

[0002] Plastic flowers are artificial flowers usually made of silk, crepe paper, polyester, plastic, crystal, etc., as well as dried flowers made from fresh flowers. The industry generally calls them artificial flowers or simulated flowers. Plastic flowers can be made through the process of thermoplastic molding. Thermoplastic molding is a molding method in which thermoplastic plastic sheets are heated to soften and then formed into products using appropriate molds or fixtures under gas pressure, liquid pressure or mechanical pressure.

[0003] The publication number is CN219250697U, which describes a cotton swab thermoplastic forming machine, comprising a bottom plate, a top plate, and a pressure plate, wherein a plurality of support columns are arranged between the bottom plate and the top plate, the pressure plate is slidably sleeved on the plurality of support columns, and the pressure plate is arranged between the bottom plate and the top plate, a cylinder is fixedly installed on the upper portion of the top plate, the cylinder is used to drive the pressure plate to press down, a fixed seat is fixed on the upper portion of the bottom plate, a movable plate is arranged on the upper portion of the fixed seat, two connecting rods are rotatably arranged on both sides of the fixed seat, the upper ends of the connecting rods on both sides are rotatably arranged on both sides of the movable plate, a placing seat and a lower hot pressing block are fixed on the upper portion of the movable plate, the upper portion of the placing seat is used to place cotton swabs, and the lower hot pressing block is used to place cotton strips, an upper hot pressing block is installed on the bottom of the pressure plate, and the lower hot pressing block is adapted to the upper hot pressing block.

[0004] A novel thermoplastic forming device described in the publication number CN213055962U includes a shell, an extension plate and a placement table, a heat sink is fixed to the front end of the shell, and a through hole is provided at the front end of the heat sink, a holding mechanism is provided on the front end surface of the extension plate, a heat insulation plate is fixed above the placement table, a slider is fixed below the placement table, and a slideway is provided on the outside of the slider, a rotating shaft is arranged below the extension plate, and a baffle is connected below the rotating shaft, an operating button is installed behind the baffle, and a main board is provided on the right side of the operating button, a support rod is fixed below the shell, and a bottom plate is installed below the support rod.

[0005] Based on the above technical features, the problem that arises is that the feeding process of the prior art plastic flower thermoplastic molding still involves manually feeding the embryo of the plastic flower onto the high-temperature pressing plate. After the thermoplastic molding is completed, the demolding process is mostly carried out manually, resulting in low production efficiency, low degree of automation, low safety, and a high risk of accidents.

[0006] Therefore, it is necessary to solve the above problems by a device for thermoforming of plastic flowers. Utility Model Content

[0007] The purpose of the utility model is to provide a device for thermoplastic molding of plastic flowers to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for thermoplastic molding of plastic flowers, comprising a base, a connecting plate is fixedly arranged on the top of the base, and a lower hot pressing block is fixedly arranged on the base; a hydraulic rod is fixedly installed on the connecting plate, and the output end of the hydraulic rod is fixedly connected to the upper hot pressing block; the lower hot pressing block and the upper hot pressing block correspond to and match each other; a module is slidably arranged on the lower hot pressing block, and the module is located between the lower hot pressing block and the upper hot pressing block; a plastic flower model hole is provided on the module; two guide blocks are fixedly arranged on the base, and the module is limitedly slidably matched with the two guide blocks; a demoulding mechanism is arranged on the base, and the demoulding mechanism is located between the two guide blocks, and the output end of the demoulding mechanism corresponds to the model hole on the module and is contact-abutted with the plastic flower formed in the model hole; the lower hot pressing block and the module are transmission-connected by a feeding linkage assembly, which is used to drive the module to slide reciprocally on the lower hot pressing block and the two guide blocks.

[0009] Preferably, the demoulding mechanism comprises an electric push rod, the output end of which corresponds to the model hole on the module and is in contact-butt engagement with the plastic flower formed in the model hole.

[0010] Preferably, the demoulding mechanism includes an ejection linkage assembly, a sliding plate and a top block as an output end; the sliding plate is slidably connected to the lower hot pressing block, the top block is fixedly arranged on the sliding plate, the top block corresponds to the model hole on the module and is in contact with the plastic flower formed in the model hole; the ejection linkage assembly is transmission-connected to both the sliding plate and the module, and is used to drive the sliding plate to slide closer to or away from the module.

[0011] Preferably, the ejection linkage assembly includes a connecting rod, a transmission block and a spring; the transmission block is fixedly connected to the module, the connecting rod is L-shaped, and the corner of the connecting rod is rotatably connected to the base; the end of the transmission block away from the module is in contact and abutment transmission cooperation with the short rod end of the connecting rod, and the long rod end of the connecting rod is in contact and abutment transmission cooperation with the sliding plate, which is used to drive the sliding plate to slide closer to the module; one end of the spring is fixedly connected to the base, and the other end is fixedly connected to the sliding plate, which is used to drive the sliding plate to slide away from the module.

[0012] Preferably, the feeding linkage assembly includes a first rack, a second rack and a gear, the first rack is fixedly connected to the upper hot pressing block, the second rack is fixedly connected to the module, and the gear is fixedly set on the lower hot pressing block; the first rack and the second rack are perpendicular to each other and are both engaged with the gear.

[0013] Preferably, a plurality of mutually parallel guide pillars are fixedly arranged on the base, and the ends of all the guide pillars away from the base are fixedly connected to the connecting plate; the output end of the hydraulic rod is fixedly connected to the slide, and the slide is slidably matched with all the guide pillars; the slide is fixedly connected to the upper hot pressing block.

[0014] Preferably, two inverted T-shaped limit sliding blocks are fixedly provided on the module, and the lower hot pressing block and the two guide blocks are provided with inverted T-shaped limit sliding grooves matching the limit sliding blocks, and the limit sliding blocks and the sliding grooves are limitedly slidably matched.

[0015] Technical effects and advantages of the utility model:

[0016] First, when the hydraulic rod pushes the upper hot pressing block to move closer to or away from the lower hot pressing block, the feeding linkage assembly drives the module to slide back and forth between the guide block and the lower hot pressing block, so as to realize automatic feeding. At the same time, when the module slides to the guide block, the demoulding mechanism can automatically demould the molded plastic flower in the model hole of the module, which has a high degree of automation and high production efficiency, and at the same time ensures personnel safety and reduces the risk of accidents.

[0017] Second, when the module slides, the utility model drives the sliding plate to slide close to or away from the module through the ejection linkage assembly, and the sliding plate drives the ejector block to move close to or away from the model hole in the module, thereby realizing the demoulding operation, reducing the power source, having a simple structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model;

[0019] Figure 2 This is a partial cross-sectional schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 3 This is a front view schematic diagram of the first embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of a guide block in Embodiment 1 of the utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model;

[0023] Figure 6 This is a partial cross-sectional schematic diagram of the second embodiment of the utility model;

[0024] Figure 7 This is an enlarged schematic diagram of point A of Embodiment 2 of the present utility model;

[0025] Figure 8 This is a schematic diagram of the demoulding mechanism of the second embodiment of the utility model.

[0026] In the figure: 1. base; 2. guide column; 3. slide; 4. connecting plate; 5. hydraulic rod; 6. lower hot pressing block; 7. guide block; 8. module; 9. first rack; 10. second rack; 11. upper hot pressing block; 12. gear; 13. connecting rod; 14. transmission block; 15. sliding plate; 16. top block; 17. spring; 18. electric push rod. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Embodiment 1

[0028] The utility model provides a device for thermoplastic molding of plastic flowers, comprising a base 1. Figure 1 As shown, four vertical guide pillars 2 are welded on the top of the base 1, and the four guide pillars 2 are distributed in a rectangular array at the four corners of the top end surface of the base 1. The tops of the four guide pillars 2 are fixedly connected to the same horizontal connecting plate 4, and a hydraulic rod 5 is bolted to the connecting plate 4. The output end of the hydraulic rod 5 slides vertically downward through the connecting plate 4 and is fixedly connected to a horizontal slide 3. The four guide pillars 2 all pass through the slide 3 and are slidably matched with the slide 3 to ensure that the slide 3 slides smoothly.

[0029] like Figure 2 As shown, the bottom of the slide 3 is fixedly assembled with an upper hot pressing block 11, and the top of the base 1 is fixedly assembled with a lower hot pressing block 6, and the upper hot pressing block 11 corresponds to the lower hot pressing block 6 up and down. Two inverted T-shaped limit slides are cut on the lower hot pressing block 6, and the two inverted T-shaped limit slides both penetrate the lower hot pressing block 6 in the front-back horizontal direction. The two inverted T-shaped limit slides are limitedly slidably matched with an inverted T-shaped and long strip limit slider, and the tops of the two limit sliders are fixedly connected to the same horizontally placed module 8, and the module 8 is cut with a model hole matching the plastic flower. The top of the module 8 is used to place the colloid embryo for making plastic flowers.

[0030] Two vertical guide blocks 7 are welded on the top of the base 1. The two guide blocks 7 are located in front of the lower hot pressing block 6 and are arranged symmetrically, one on the left and one on the right. Figure 4 As shown, the tops of the two guide blocks 7 are cut with limit slots matching the limit sliders. The limit slots on the two guide blocks 7 correspond to the limit slots on the lower hot pressing block 6 one by one, and the limit sliders and the limit slots on the guide blocks 7 are limited and slidably matched.

[0031] like Figure 2As shown, the module 8 is connected to the upper hot pressing block 11 through a feeding linkage assembly, which is used to drive the module 8 to slide back and forth on the lower hot pressing block 6 and the two guide blocks 7. The feeding linkage assembly includes a vertical first rack 9, a horizontal second rack 10, and a gear 12. A connecting block is welded and fixed to the top left end face of the first rack 9, and the connecting block is fixedly connected to the upper hot pressing block 11, and the teeth of the first rack 9 face forward. A clearance groove is drilled on the base 1, and the clearance groove matches the first rack 9. The first rack 9 and the clearance groove are plugged and matched to ensure that the base 1 does not block the first rack 9 when the first rack 9 moves downward. Another connecting block is welded and fixed to the left end face of the front of the second rack 10, and this connecting block is fixedly connected to the module 8, and the teeth of the second rack 10 face downward. A rotating shaft is welded and fixed to the right end face of the lower hot pressing block 6, and the gear 12 is rotatably sleeved on the rotating shaft and is rotatably connected to the lower hot pressing block 6 through the rotating shaft. The first rack 9 and the second rack 10 are both meshed with the gear 12 .

[0032] like Figure 2 and Figure 3 As shown, a horizontal extension plate is welded on the front end face of the base 1, and a demoulding mechanism is assembled on the extension plate. The demoulding mechanism is located between two guide blocks 7, and the output end of the demoulding mechanism corresponds to the model hole on the module 8 and is in contact with the molded plastic flower, so as to eject the molded plastic flower from the model hole. The demoulding mechanism includes an electric push rod 18, which is bolted to the extension plate, and the output end of the electric push rod 18 is vertically upward, corresponding to the model hole on the module 8 and is in contact with the molded plastic flower.

[0033] Working principle of embodiment 1:

[0034] Before thermoplastic molding, the mold hole on the module 8 is located directly above the output end of the electric push rod 18.

[0035] When in use, the colloid embryo for making plastic flowers is placed on the top of the module 8, and then the hydraulic rod 5 is started. The output end of the hydraulic rod 5 extends downward and drives the slide 3 to move downward. The slide 3 drives the upper hot pressing block 11 to move downward. The upper hot pressing block 11 drives the first rack 9 to move downward. The first rack 9 drives the gear 12 to rotate clockwise. The gear 12 drives the second rack 10 to move backward. The second rack 10 drives the module 8 to slide backward synchronously. The module 8 drives the colloid embryo for making plastic flowers to move backward synchronously and gradually move to the bottom of the upper hot pressing block 11. At this time, the hydraulic rod 5 is turned off, and the upper hot pressing block 11 and the lower hot pressing block 6 perform the plastic flower thermoplastic molding operation through the model hole on the module 8.

[0036] After the thermoplastic molding operation is completed, the hydraulic rod 5 is started again in the reverse direction, the output end of the hydraulic rod 5 is retracted upward and drives the upper hot pressing block 11 to move upward, the upper hot pressing block 11 drives the first rack 9 to move upward synchronously, the first rack 9 drives the gear 12 to rotate counterclockwise, the gear 12 drives the second rack 10 to move forward, the second rack 10 drives the module 8 to slide forward synchronously, and the module 8 drives the molded plastic flower to move forward until the model hole on the module 8 is located directly above the output end of the electric push rod 18, that is, the molded plastic flower is located directly above the output end of the electric push rod 18. At this time, the hydraulic rod 5 is turned off, and the electric push rod 18 is started, the output end of the electric push rod 18 extends upward and gradually contacts and abuts with the molded plastic flower until the molded plastic flower is ejected from the model hole.

[0037] After that, the formed plastic flower can be taken down and the electric push rod 18 can be closed. The whole operation process has a high degree of automation, high production efficiency, improved safety and reduced accident risks. Embodiment 2

[0038] like Figure 5-Figure 8 The device shown is used for thermoplastic molding of plastic flowers. The difference between this embodiment and the first embodiment is that the demoulding mechanism includes an ejection linkage assembly, a horizontal sliding plate 15 and a top block 16 as an output end. A vertical T-shaped slide groove is provided at the front end of the lower hot pressing block 6, and a T-shaped slider is limitedly slidably engaged in the T-shaped slide groove. The front end of the T-shaped slider is fixedly connected to the sliding plate 15, and the top block 16 is welded and fixed to the top of the sliding plate 15. The top block 16 corresponds to the model hole on the module 8 and is in contact with the molded plastic flower. The sliding plate 15 and the module 8 are matched through the transmission of the ejection linkage assembly, which is used to drive the sliding plate 15 to slide close to or away from the module 8.

[0039] The ejection linkage assembly includes an L-shaped connecting rod 13, a vertical transmission block 14 and a spring 17. The top of the transmission block 14 is fixedly connected to the module 8, and the transmission block 14 and the ejection block 16 are staggered to ensure that there is no conflict in the stroke. A push block is welded to the front end face of the bottom of the transmission block 14. A horizontal connecting shaft is fixedly assembled on the base 1, and the connecting shaft passes through the corner of the connecting rod 13 and is rotatably connected to the connecting rod 13. The push block at the bottom of the transmission block 14 is in contact with the short rod end of the connecting rod 13 and is used to drive the connecting rod 13 to rotate around the connecting shaft. The long rod end of the connecting rod 13 is in contact with the sliding plate 15 and is used to push the sliding plate 15 to slide close to the module 8. The spring 17 is located directly below the sliding plate 15, the top of the spring 17 is fixedly connected to the sliding plate 15, and the bottom of the spring 17 is fixedly connected to the base 1, which is used to drive the sliding plate 15 to slide away from the module 8.

[0040] Working principle of the second embodiment:

[0041] The difference between this working principle and the working principle of the first embodiment lies in the working process of the demoulding mechanism. Now only the working process of the demoulding mechanism is described in detail, and the other working processes are the same as the principles of the first embodiment.

[0042] When the module 8 slides backward, the push block at the bottom of the transmission block 14 gradually loses contact with the short rod end of the connecting rod 13, and the long rod end of the connecting rod 13 gradually rotates closer to the base 1 under the action of its own weight. At the same time, without the support of the long rod end of the connecting rod 13, under the action of its own weight and the spring tension of the spring 17, the sliding plate 15 slides downward, and the sliding plate 15 drives the top block 16 to slide downward until the top end surface of the sliding plate 15 is lower than the lowest point of the transmission block 14, ensuring that the travel of the sliding plate 15 and the transmission block 14 does not conflict.

[0043] When the module 8 slides forward, i.e., when demolding, the push block at the bottom of the transmission block 14 moves close to the short rod end of the connecting rod 13 until it contacts and abuts against the short rod end. As the module 8 continues to move, the push block at the bottom of the transmission block 14 pushes the short rod end of the connecting rod 13 to gradually rotate close to the base 1. At the same time, the long rod end of the connecting rod 13 gradually rotates away from the base 1 and moves close to the sliding plate 15 until it contacts and abuts against the sliding plate 15.

[0044] The module 8 then moves, and the long rod end of the connecting rod 13 pushes the sliding plate 15 to slide upward, and the sliding plate 15 drives the top block 16 to move upward until it contacts the molded plastic flower and ejects the molded plastic flower from the mold hole of the module 8.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for thermoplastic molding of plastic flowers, comprising a base (1), a connecting plate (4) being fixedly arranged on the top of the base (1), characterized in that: A lower hot pressing block (6) is fixedly arranged on the base (1); a hydraulic rod (5) is fixedly installed on the connecting plate (4), and the output end of the hydraulic rod (5) is fixedly connected to an upper hot pressing block (11); the lower hot pressing block (6) and the upper hot pressing block (11) correspond to and match each other; a module (8) is slidably arranged on the lower hot pressing block (6), and the module (8) is located between the lower hot pressing block (6) and the upper hot pressing block (11); a plastic flower model hole is provided on the module (8); a lower hot pressing block (6) is fixedly arranged on the base (1); a lower hot pressing block (6) is fixedly arranged on the connecting plate (4); a lower hot pressing block (6) is fixedly arranged on the connecting plate (4); and an upper hot pressing block (11) is fixedly arranged on the connecting plate (4); and ... Two guide blocks (7) are arranged, and the module (8) is in limited sliding cooperation with the two guide blocks (7); a demoulding mechanism is arranged on the base (1), and the demoulding mechanism is located between the two guide blocks (7); the output end of the demoulding mechanism corresponds to the model hole on the module (8) and is in contact-type abutment cooperation with the plastic flower formed in the model hole; the lower hot pressing block (6) and the module (8) are connected by a feeding linkage assembly, which is used to drive the module (8) to slide back and forth between the lower hot pressing block (6) and the two guide blocks (7).

2. The device for thermoplastic molding of plastic flowers according to claim 1, characterized in that: The demoulding mechanism comprises an electric push rod (18), the output end of which corresponds to the model hole on the module (8) and is in contact-type abutment with the plastic flower formed in the model hole.

3. The device for thermoplastic molding of plastic flowers according to claim 1, characterized in that: The demoulding mechanism comprises an ejection linkage assembly, a sliding plate (15) and an ejector block (16) as an output end; the sliding plate (15) is slidably connected to the lower hot pressing block (6); the ejector block (16) is fixedly arranged on the sliding plate (15); the ejector block (16) corresponds to the model hole on the module (8) and is in contact with the plastic flower formed in the model hole; the ejection linkage assembly is transmission-connected to both the sliding plate (15) and the module (8) and is used to drive the sliding plate (15) to slide closer to or away from the module (8).

4. The device for thermoplastic molding of plastic flowers according to claim 3, characterized in that: The ejection linkage assembly comprises a connecting rod (13), a transmission block (14) and a spring (17); the transmission block (14) is fixedly connected to the module (8), the connecting rod (13) is L-shaped, and the corner of the connecting rod (13) is rotatably connected to the base (1); the end of the transmission block (14) away from the module (8) is in contact with the short rod end of the connecting rod (13) for transmission cooperation, and the long rod end of the connecting rod (13) is in contact with the sliding plate (15) for transmission cooperation, so as to drive the sliding plate (15) to slide closer to the module (8); one end of the spring (17) is fixedly connected to the base (1), and the other end is fixedly connected to the sliding plate (15), so as to drive the sliding plate (15) to slide away from the module (8).

5. The device for thermoplastic molding of plastic flowers according to claim 1, characterized in that: The feeding linkage assembly comprises a first rack (9), a second rack (10) and a gear (12); the first rack (9) is fixedly connected to the upper hot pressing block (11); the second rack (10) is fixedly connected to the module (8); and the gear (12) is fixedly arranged on the lower hot pressing block (6); the first rack (9) and the second rack (10) are perpendicular to each other and are both in meshing engagement with the gear (12).

6. The device for thermoplastic molding of plastic flowers according to claim 1, characterized in that: A plurality of mutually parallel guide pillars (2) are fixedly arranged on the base (1), and the ends of all the guide pillars (2) away from the base (1) are fixedly connected to the connecting plate (4); the output end of the hydraulic rod (5) is fixedly connected to the slide (3), and the slide (3) is slidably matched with all the guide pillars (2); the slide (3) is fixedly connected to the upper hot pressing block (11).

7. The device for thermoplastic molding of plastic flowers according to claim 1, characterized in that: Two inverted T-shaped limit slide blocks are fixedly arranged on the module (8), and the lower hot pressing block (6) and the two guide blocks (7) are provided with inverted T-shaped limit slide grooves matching the limit slide blocks, and the limit slide blocks and the slide grooves are in limited sliding cooperation.

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