PP Concave Shell Die Splitting Machine

Abstract

The present invention relates to the technical field of full-automatic cutting, material separation and collection of injection molded products, specifically a splitting and shearing machine for a PP concave shell mold, which is used in cooperation with a PP concave shell mold and includes: a frame body, a material placing mechanism, a grasping mechanism, a cutting mechanism and a material separation mechanism. The material placing mechanism is arranged at one end of the frame body, the cutting mechanism is arranged at the top of the frame body, and the material separation mechanism is arranged in the middle of the frame body, corresponding to the lower part of the cutting mechanism. The PP concave shell mold includes a concave shell mold and a connecting mold. The connecting mold includes a material column arranged in the middle thereof, and a certain number of connecting rods uniformly extending outward from the bottom end of the material column. The concave shell mold is integrally in a hemispherical shell structure, and the opening of the concave shell mold is downward. The present invention improves the production efficiency through an automated logic setting, realizes non-contact production, accurately cuts to improve the quality of the product, and ensures accurate material separation and collection.

Description

Technical Field

[0001] The present invention relates to the technical field of full-automatic cutting, material separation and collection of injection-molded products, and specifically to a PP concave shell mold splitting machine. Background Art

[0002] In the past production process, the plastic concave molds produced by injection molding were often cut and sorted manually. First, it wastes labor; second, it is inevitable to come into contact with the products during the production process, and sweat stains and dust are likely to stick to the products; third, it is very easy to cause incorrect mixing of products during the material separation process, and the connecting molds are also put into the product box, which affects the subsequent processes; fourth, the quality of manual cutting is unstable, and due to incomplete cutting, burrs are easily generated, or the cut products fly off.

[0003] Chinese Patent with Document Number CN217618373U discloses a laser cutting optical path device and a laser cutting head for a laser cutting head. This laser cutting optical path device has a wide adaptation range, can meet the requirements of the spot energy distribution at different thicknesses of the plate, and greatly improves the cutting quality and speed of medium and thick plates; it solves the problem of wasting labor, but because the main principle of laser cutting is the thermal cutting principle, that is, the laser itself burns the material, and the material is melted and cut through thermal burning, so more burrs will be generated and the thermal burning itself is unstable, which is very likely to affect the product.

[0004] Chinese Patent with Document Number CN207188896U discloses a metal cutting machine with good shock absorption effect. This metal cutting machine with good shock absorption effect has good shock absorption effect by setting the first spring, the second spring, the spring cylinder, the shock absorption plate and the shock absorption block, effectively solving the problem that a large amount of vibration will be generated during the cutting process of the current metal cutting machine, and these vibrations transmitted to the ground will affect the normal work of the workers, and there may be residents next to the factory, and the vibration of the metal cutting machine on the ground will also affect the normal life of the residents; it improves the stability of product cutting to a certain extent, but it cannot ensure that the product is not touched during the production process. Summary of the Invention

[0005] The purpose of the present invention is to provide a PP concave shell mold splitting machine to solve the above problems.

[0006] To achieve the above purpose, the following technical solutions are provided:

[0007] PP concave shell mold splitting machine, used in conjunction with the PP concave shell mold, including: a frame body, a material placing mechanism, a grasping mechanism, a cutting mechanism, and a material separating mechanism. The material placing mechanism is arranged at one end of the frame body, the cutting mechanism is arranged on the top of the frame body, and the material separating mechanism is arranged in the middle of the frame body, corresponding to the lower part of the cutting mechanism. The PP concave shell mold includes a concave shell mold and a connecting mold. The connecting mold includes a material column arranged in the middle thereof, and a certain number of connecting rods uniformly extending outward along the bottom end of the material column. The concave shell mold is a hemispherical shell structure as a whole, with the opening of the concave shell mold facing downward, and the opening edge thereof is connected to the end of the outward extending side of the connecting rod. The cutting mechanism is used to separate the concave shell mold from the connecting mold, and the material separating mechanism is used to fix the PP concave shell mold and collect the separated concave shell mold. The grasping mechanism has a first position above the material placing mechanism, a second position between the material placing mechanism and the material separating mechanism, and a third position above the material separating mechanism. The grasping mechanism can transfer the PP concave shell mold through position detection.

[0008] Preferably, the material placing mechanism includes a material placing table. The material placing table is a cylindrical structure as a whole. A certain number of wedge-shaped blocks are arranged on the top surface of the material placing table. The wedge-shaped blocks are uniformly arranged along the circumferential direction of the material placing table at a certain interval. The wedge-shaped blocks are arranged with a reduced diameter from the outer edge of the material placing table inward, and a channel is formed between two adjacent wedge-shaped blocks. The channel extends radially towards the center of the material placing table. The material placing table at the position of the channel also has a first hole opened downward, and the first hole penetrates the side walls of two adjacent wedge-shaped blocks. The wedge-shaped blocks are arranged with an increased diameter from top to bottom, and there is a certain angle between its top surface and the horizontal plane.

[0009] Preferably, a guide rail is extended and arranged on the frame body towards the material placing mechanism side. The grasping mechanism is arranged on the guide rail and can slide relative to it. The grasping mechanism includes a first movable plate slidably connected to the guide rail, a first control mechanism arranged in the vertical direction, and a second control mechanism arranged in the horizontal direction. The first control mechanism is fixedly connected to the first movable plate. The first control mechanism is drivingly connected to a second movable plate. The second control mechanism is fixedly connected to the second movable plate. Furthermore, the second control mechanism can be lifted and lowered by the transmission of the first control mechanism. The second control mechanism is drivingly connected to a movable chuck, and the movable chuck can switch between a closed state and an open state for grasping and releasing the material column.

[0010] Preferably, the first control mechanism can detect the position of the grasping mechanism on the guide rail, the second control mechanism can detect the closed and open states of the movable chuck, and the first control mechanism and the second control mechanism can cooperate to control the movement of the grasping mechanism.

[0011] Preferably, the slitting mechanism includes a slitting cylinder, a mounting plate, a cutting plate, a cutting tool head, a positioning upper plate, and a support shaft. The slitting cylinder is fixed on the mounting plate. The pushing end of the slitting cylinder penetrates through the mounting plate and is in transmission connection with the cutting plate. The support shaft penetrates through the cutting plate and is slidable relative to it. The cutting tool head is fixedly connected to the cutting plate and is used for cutting the PP concave shell mold. The positioning upper plate is sleeved on the outer edge of the cutting tool head along the circumferential direction and is connected to the cutting plate.

[0012] Preferably, the distance between the positioning upper plate and the cutting plate is variable.

[0013] Preferably, the material distribution mechanism includes a positioning lower plate, a material distribution guide groove, and a material receiving bucket. The PP concave shell mold can be arranged in the positioning lower plate. The middle part of the positioning lower plate can be fixedly connected with a mold. A certain number of second holes are also formed in the middle part of the positioning lower plate and extend outward. The second holes are arranged in cooperation with the concave shell mold along the circumferential direction of the positioning lower plate and penetrate through the positioning lower plate from top to bottom for discharging the cut concave shell mold. The material distribution guide grooves are respectively connected below each second hole. Each material distribution guide groove is inclined outward along the radial direction of the positioning lower plate. The material receiving bucket is correspondingly located below each material distribution guide groove and is used for collecting the cut concave shell mold.

[0014] Preferably, the positioning lower plate and the positioning upper plate can be relatively fitted, and the cutting tool head and the positioning upper plate can be relatively slid, so as to fixedly cut the PP concave shell mold.

[0015] Preferably, the first control mechanism and the second control mechanism can jointly control the first movable plate to move along the guide rail to the first position, the second position, or the third position. The grasping mechanism at the first position can only move to the third position. The grasping mechanism at the third position can only move to the second position. The grasping mechanism at the second position can move to the first position or the third position according to the closed or open state of the movable chuck.

[0016] Preferably, when the grasping mechanism moves from the third position to the second position, the second control mechanism detects the closed and open states of the movable chuck. If the movable chuck is in the closed state, after controlling it to change to the open state, the first control mechanism controls the grasping mechanism to move from the second position to the first position. If the movable chuck is in the open state, the first control mechanism controls the grasping mechanism to move from the second position to the third position.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention improves production efficiency through automated logic settings, realizes contactless production, accurately cuts to improve product quality, and ensures accurate material distribution and collection.

[0019] 2. The overall design of the PP concave shell mold of the present invention is a structure of one material column with multiple concave shell molds, and the opening of the concave shell mold faces downward. During its transportation, the position where the grasping mechanism grabs throughout the process is the position of the material column. Moreover, during the erection of the PP concave shell mold by the material placement mechanism and the cutting mechanism, both are erected through connecting rods. At this time, the concave shell mold is suspended, so the concave shell mold will not touch any mechanical components during placement and transportation, thereby ensuring that the concave shell mold is not contaminated and that the transportation process does not cause scratches or collisions to the concave shell mold;

[0020] 3. The grasping mechanism of the present invention changes different action directions according to different positions, simplifies the motion judgment process of the grasping mechanism, improves the precision of mechanical automation, and reduces the error accumulation caused by too many stroke judgment steps;

[0021] 4. The present invention changes different actions of the grasping mechanism through the opening and closing states of the movable chuck, simplifying the motion judgment steps;

[0022] 5. The top surface of the wedge block of the present invention and the two side surfaces connecting the top surface are both arranged to be inclined along the central direction of the material placement table, and a straight hole is formed between its side surface and the side surfaces of other adjacent wedge blocks. The hole just matches the connecting rod of the connecting mold, and the connecting rod can be fitted into the hole. At the same time, the outer diameter of the hollow part surrounded by the wedge blocks at the top of the material placement table can be set to be slightly larger than the middle size of the connecting mold. Thus, while the connecting mold is clamped in the hole by the connecting rod, the connecting rod can slightly move back and forth along the direction of the hole to a certain extent, preventing the PP concave shell mold from not being taken out by the grasping mechanism due to too tight clamping. Correspondingly, the first hole penetrates the side wall of the wedge block and makes the middle position of the hole concave downward, preventing the PP concave shell mold from being adsorbed on the material placement table due to the action of air pressure or static electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 is Figure 1 a partial schematic Figure 1 ;

[0025] Figure 3 is Figure 2 an enlarged schematic diagram of the structure at a in

[0026] Figure 4 is Figure 1 a partial schematic Figure 2 ;

[0027] Figure 5 is Figure 4 an enlarged schematic diagram of the structure at b in

[0028] Figure 6 isFigure 1 Partial sectional view Figure 1 ;

[0029] Figure 7 It is a schematic structural diagram of a PP concave shell mold;

[0030] Figure 8 It is a schematic side view of the present invention;

[0031] In the figure: 10 - frame body, 101 - guide rail, 20 - material placing mechanism, 201 - material placing table, 202 - wedge block, 203 - hole channel, 204 - first hole, 30 - grasping mechanism, 301 - first movable plate, 302 - first control mechanism, 303 - second movable plate, 304 - second control mechanism, 305 - movable chuck, 40 - slitting mechanism, 401 - slitting cylinder, 402 - mounting plate, 403 - cutting plate, 404 - cutting tool head, 405 - positioning upper plate, 406 - support shaft, 50 - material distributing mechanism, 501 - positioning lower plate, 502 - second hole, 503 - material distribution guide groove, 504 - material receiving bucket, 60 - PP concave shell mold, 601 - concave shell mold, 602 - connecting mold, 603 - material column, 604 - connecting rod. Specific embodiments

[0032] Next, the technical solutions of the structural schematic diagram in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] PP concave shell mold splitting machine, used in conjunction with the PP concave shell mold 60, includes: a frame body 10, a material placing mechanism 20, a grasping mechanism 30, a cutting mechanism 40, and a material distributing mechanism 50. The material placing mechanism 20 is arranged at one end of the frame body 10, the cutting mechanism 40 is arranged at the top of the frame body 10, and the material distributing mechanism 50 is arranged in the middle of the frame body 10, corresponding to being below the cutting mechanism 40. The PP concave shell mold 60 includes a concave shell mold 601 and a connecting mold 602. The connecting mold 602 includes a material column 603 arranged in the middle thereof, and a certain number of connecting rods 604 uniformly extending outward from the bottom end of the material column 603. The concave shell mold 601 is an overall hemispherical shell structure, with the opening of the concave shell mold 601 facing downward, and the opening edge thereof is connected to the end of the outward extending side of the connecting rod 604. The cutting mechanism 40 is used to separate the concave shell mold 601 from the connecting mold 602, and the material distributing mechanism 50 is used to fix the PP concave shell mold 60 and collect the separated concave shell mold 601. The grasping mechanism 30 has a first position above the material placing mechanism 20, a second position between the material placing mechanism 20 and the material distributing mechanism 50, and a third position above the material distributing mechanism 50. The grasping mechanism 30 can transfer the PP concave shell mold 60 through position detection. The overall design of the PP concave shell mold 60 is a structure with one material column 603 and multiple concave shell molds 601, and the opening of the concave shell mold 601 faces downward. During the transfer process, the position where the grasping mechanism 30 grabs the whole time is the position of the material column 603. When the material placing mechanism 20 and the cutting mechanism 40 set up the PP concave shell mold 60, they are both set up through the connecting rod 604. At this time, the concave shell mold 601 is suspended, so the concave shell mold 601 will not touch any mechanical components during the placement and transfer processes, thereby ensuring that the concave shell mold 601 is not contaminated and that no scratches or collisions are generated on the concave shell mold 601 during the transportation process.

[0034] In some embodiments, the material placing mechanism 20 includes a material placing table 201. The overall structure of the material placing table 201 is cylindrical. A certain number of wedge-shaped blocks 202 are provided on the top surface of the material placing table 201. The wedge-shaped blocks 202 are evenly arranged along the circumferential direction of the material placing table 201 at a certain interval. The wedge-shaped blocks 202 are arranged with a reduced diameter from the outer edge of the material placing table 201 inward. A channel 203 is formed between two adjacent wedge-shaped blocks 202. The channel 203 extends radially towards the center of the material placing table 201. A first hole 204 is also opened downward at the position of the channel 203 on the material placing table 201. The first hole 204 penetrates the side walls of two adjacent wedge-shaped blocks 202. The wedge-shaped blocks 202 are arranged with an increased diameter from top to bottom, and there is a certain angle between its top surface and the horizontal plane; the top surface of the wedge-shaped block 202 and the two side surfaces connecting the top surface are both arranged to be inclined along the central direction of the material placing table 201, and a straight channel 203 is formed between its side surface and the side surfaces of other adjacent wedge-shaped blocks 202. The channel 203 exactly matches the connecting rod 604 of the connecting mold 602. The connecting rod 604 can be fitted and inserted into the channel 203. At the same time, the outer diameter of the hollow part surrounded by the wedge-shaped blocks 202 at the top of the material placing table 201 can be set to be slightly larger than the middle dimension of the connecting mold 602. Thus, while the connecting mold 602 is clamped in the channel 203 through the connecting rod 604, the connecting rod 604 can slightly move back and forth along the direction in which the channel 203 is opened to a certain extent, preventing the PP concave shell mold 60 from not being taken out by the grasping mechanism 30 due to too tight clamping. Correspondingly, the first hole 204 penetrates the side wall of the wedge-shaped block 202 and makes the middle position of the channel 203 sink downward, preventing the PP concave shell mold 60 from being adsorbed on the material placing table 201 due to the action of air pressure or static electricity;

[0035] In this embodiment, first, an external manipulator will place the PP concave shell mold 60 on the material placing table 201. There is a certain error in the placing position of the manipulator. Therefore, when the manipulator places the PP concave shell mold 60 within a certain range of the material placing table 201, the connecting rod 604 contacts the side wall or the top surface of the wedge-shaped block 202. The side wall and the top surface of the wedge-shaped block 202 both have a tendency to incline towards the center direction of the material placing table 201. The connecting rod 604 can gradually slide towards the center direction of the material placing table 201. At the same time, the connecting rod 604 also slides towards the channel 203. Thus, the entire PP concave shell mold 60 gradually corrects its position and is finally clamped on the material placing table 201. During the entire feeding process, the concave shell mold 601 is suspended. Only through the connecting rod 604, the positioning correction of the PP concave shell mold 60 is realized. While simplifying the positioning operation, the stability of material placing is ensured;

[0036] In some embodiments, a guide rail 101 extends from the frame 10 towards the feeding mechanism side. The grasping mechanism 30 is arranged on the guide rail 101 and is slidable relative thereto. The grasping mechanism 30 includes a first movable plate 301 slidably connected to the guide rail 101, a first control mechanism 302 arranged in the vertical direction, and a second control mechanism 304 arranged in the horizontal direction. The first control mechanism 302 is fixedly connected to the first movable plate 301. The first control mechanism 302 is drivingly connected to a second movable plate 303. The second control mechanism 304 is fixedly connected to the second movable plate 303. Thus, the second control mechanism 304 can be driven by the first control mechanism 302 to move up and down. The second control mechanism 304 is drivingly connected to a movable chuck 305. The movable chuck 305 can be switched between a closed state and an open state for grasping and releasing the material column 603. The first movable plate 301 is used to perform the horizontal movement operation of the grasping mechanism 30 along the direction of the guide rail 101. The second movable plate 303 is used to perform the lifting operation of the second control mechanism 304, thereby controlling the lifting of the movable chuck 305, and realizing the clamping of the PP concave shell mold 60 at different height positions.

[0037] In some embodiments, the first control mechanism 302 can detect the position of the grasping mechanism 30 on the guide rail 101. The second control mechanism 304 can detect the closed and open states of the movable chuck 305. The first control mechanism 302 and the second control mechanism 304 can cooperate to control the movement of the grasping mechanism 30. The first control mechanism 302 can detect which position among the first position, the second position, and the third position the grasping mechanism 30 is in. Thus, according to the different positions of the grasping mechanism 30, the grasping mechanism 30 can be controlled to perform different next actions.

[0038] In some embodiments, the slitting mechanism 40 includes a slitting cylinder 401, a mounting plate 402, a cutting plate 403, a cutting tool head 404, a positioning upper plate 405, and a support shaft 406. The slitting cylinder 401 is fixed to the mounting plate 402. The pushing end of the slitting cylinder 401 penetrates through the mounting plate 402 and is drivingly connected to the cutting plate 403. The support shaft 406 penetrates through the cutting plate 403 and is slidable relative thereto. The cutting tool head 404 is fixedly connected to the cutting plate 403 for cutting the PP concave shell mold 60. The positioning upper plate 405 is sleeved on the outer edge of the cutting tool head 404 along the circumferential direction and is connected to the cutting plate 403. A certain number of air jet holes can be provided on the positioning upper plate 405. Thus, during the process of the positioning upper plate 405 and the positioning lower plate 501 fitting together to cut the PP concave shell mold 60, the positioning upper plate 405 can jet air to assist the concave shell mold 601 to break away from the connecting mold 602.

[0039] In some embodiments, the distance between the positioning upper plate 405 and the cutting plate 403 is variable; a spring connection with a certain stiffness can be provided between the positioning upper plate 405 and the cutting plate 403, or a telescopic rod member connection can also be provided. After the positioning upper plate 405 fits with the positioning lower plate 501, the distance between the positioning upper plate 405 and the cutting plate 403 becomes the smallest. At this time, the cutting tool head 404 further moves downward relative to the positioning upper plate 405 to cut the PP concave shell mold 60;

[0040] In some embodiments, the material distribution mechanism 50 includes a positioning lower plate 501, a material distribution guide groove 503, and a material receiving bucket 504. The PP concave shell mold 60 can be arranged in the positioning lower plate 501. A fixed connection mold 602 can be fixedly connected to the middle of the positioning lower plate 501. A certain number of second holes 502 are also opened outward in the middle of the positioning lower plate 501. The second holes 502 are arranged in cooperation with the concave shell mold 601 along the circumferential direction of the positioning lower plate 501, and the second holes 502 penetrate the positioning lower plate 501 from top to bottom for discharging the cut concave shell mold 601. The material distribution guide grooves 503 are respectively connected below each second hole 502. Each material distribution guide groove 503 is inclined outward along the radial direction of the positioning lower plate 501. The material receiving bucket 504 is correspondingly located below each material distribution guide groove 503 for collecting the cut concave shell mold 601; the middle of the positioning lower plate 501 is designed according to the PP concave shell mold 60, and a blocking block similar to the wedge block 202 is arranged in the middle for fixing the PP concave shell mold 60. Certain patterns are provided at the edges of the second holes 502, and the position of the positioning lower plate 501 where the second holes 502 are located is inclined outward along the center of the positioning lower plate 501. Thus, the movement of the PP concave shell mold 60 affected by the cutting force can be blocked by the second holes 502, thereby reducing other impacts on the PP concave shell mold 60 during the cutting process;

[0041] In some embodiments, the positioning lower plate 501 and the positioning upper plate 405 can be relatively fitted, and the cutting tool head 404 can slide relative to the positioning upper plate 405 to fix and cut the PP concave shell mold 60;

[0042] In this embodiment, the PP concave shell mold 60 is transported to the positioning lower plate 501 by the grasping mechanism 30, and then the grasping mechanism 30 returns to the second position. At this time, the slitting cylinder 401 operates to drive the cutting plate 403 to descend. When the positioning upper plate 405 is attached to the positioning lower plate 501, the cutting plate 403 continues to move downward until the connecting member between the positioning upper plate 405 and the cutting plate 403 changes to the minimum size, and the distance between the positioning upper plate 405 and the cutting plate 403 becomes the minimum. At this time, the downward force of the cutting tool head 404 is sufficient to break the connecting rod 604 between the concave shell mold 601 and the connecting mold 602. Affected by the second hole 502 and the positioning upper plate 405, the concave shell mold 601 falls into the material distribution guide groove 503 along the second hole 502 and finally falls into different material receiving buckets 504. The slitting cylinder 401 drives the cutting plate 403 to return to its original position. At this time, the connecting mold 602 is still fixed in the middle of the positioning lower plate 501. The grasping mechanism 30 moves from the second position to above the positioning lower plate 501, takes away the connecting mold 602, and then the grasping mechanism 30 moves to the second position again and drops the connecting mold 602 into the corresponding trash bin below the second position, thus completing a slitting and sampling operation of the PP concave shell mold 60;

[0043] In some embodiments, the first control mechanism 302 and the second control mechanism 304 can cooperatively control the first movable plate 301 to move along the guide rail 101 to the first position, the second position or the third position. The grasping mechanism 30 at the first position can only move to the third position, the grasping mechanism 30 at the third position can only move to the second position, and the grasping mechanism 30 at the second position can move to the first position or the third position according to the closed or open state of the movable chuck 305; the grasping mechanism 30 changes different action directions by different positions it is in, simplifies the motion judgment process of the grasping mechanism 30, improves the precision of mechanical automation, and reduces the error accumulation caused by too many stroke judgment steps;

[0044] In some embodiments, when the grasping mechanism 30 moves from the third position to the second position, the second control mechanism 304 detects the closed and open states of the movable chuck 305. If the movable chuck 305 is in the closed state, after controlling it to change to the open state, the first control mechanism 302 controls the grasping mechanism 30 to move from the second position to the first position. If the movable chuck 305 is in the open state, the first control mechanism 302 controls the grasping mechanism 30 to move from the second position to the third position; by changing the open and closed states of the movable chuck 305, different actions of the grasping mechanism 30 are changed, which simplifies the motion judgment steps;

[0045] In this embodiment, both the first control mechanism 302 and the second control mechanism 304 include a cylinder and a sensor. The starting position of the grasping mechanism 30 is at the second position, and the movable chuck 305 is in the open state. At this time, the device is in a state of waiting for the incoming material. The manipulator places the PP concave shell mold 60 on the material placing table 201. The sensor of the first control mechanism 302 detects that the workpiece is in place, and after a delay of a certain time, it controls the grasping mechanism 30 to move to the first position. The first control mechanism 302 detects that it has moved to the first position, and controls the second movable plate 303 to drive the second control mechanism 304 to descend. The first control mechanism 302 detects that it has descended in place, and the second control mechanism 304 controls the movable chuck 305 to clamp the material column 603 of the PP concave shell mold 60. The second control mechanism 304 detects that the movable chuck 305 is clamped in place (since the material column 603 has a thickness, the positions of the movable chuck 305 when clamping the material column 603 and when not clamping the material column 603 are different. If the material column 603 is not clamped, the second control mechanism 304 will start an audible and visual alarm). The first control mechanism 302 controls the second movable plate 303 to drive the second control mechanism 304 to ascend. The first control mechanism 302 detects that it has ascended in place, and controls the grasping mechanism 30 to move to the third position. The first control mechanism 302 detects that it has moved to the third position, and controls the second movable plate 303 to drive the second control mechanism 304 to descend. The first control mechanism 302 detects that it has descended in place, and the second control mechanism 304 controls the movable chuck 305 to open. The PP concave shell mold 60 falls onto the positioning lower plate 501. The first control mechanism 302 controls the second movable plate 303 to drive the second control mechanism 304 to ascend. After detecting that it has ascended in place, the first control mechanism 302 controls the grasping mechanism 30 to move to the second position (to avoid the cutting operation). After a certain delay, the second control mechanism 304 detects that the movable chuck 305 is open. At this time, the first program is executed, that is, the grasping mechanism 30 moves to the third position, descends, grasps the material column 603 of the connecting mold 602, takes away the connecting mold 602, ascends, and the grasping mechanism 30 returns to the second position. The second control mechanism 304 detects that the movable chuck 305 is closed, controls the movable chuck 305 to open, drops the cut connecting mold 602, and waits for the manipulator to supply the material after a period of time to complete the automated cycle;

[0046] In this embodiment, when the grasping mechanism 30 is at the first and third positions, it can only move to one other position, which simplifies the judgment of the motion logic of the grasping mechanism 30. The closed or open state of the movable chuck 305 can control the next motion of the grasping mechanism 30 at the second position. Furthermore, the grasping mechanism 30 at the second position can change the motion direction only through the movable chuck 305, reducing the stroke judgment error of the grasping mechanism 30.

Claims

1. PP concave shell die splitting machine, used in conjunction with the PP concave shell die, characterized in that: Comprising: A frame body, a material placing mechanism, a grasping mechanism, a slitting mechanism and a material distributing mechanism. The material placing mechanism is arranged at one end of the frame body. The slitting mechanism is arranged at the top of the frame body. The material distributing mechanism is arranged in the middle of the frame body, corresponding to be below the slitting mechanism. The PP concave shell mold includes a concave shell mold and a connecting mold. The connecting mold includes a material column arranged in the middle thereof and a certain number of connecting rods uniformly extending outward from the bottom end of the material column. The concave shell mold is integrally of a hemispherical shell structure. The concave shell mold is arranged with the opening downward, and the opening edge thereof is connected to the end of the outward extending side of the connecting rod. The slitting mechanism is used to separate the concave shell mold from the connecting mold. The material distributing mechanism is used to fix the PP concave shell mold and collect the separated concave shell mold. The grasping mechanism has a first position above the material placing mechanism, a second position between the material placing mechanism and the material distributing mechanism, and a third position above the material distributing mechanism. The grasping mechanism can transfer the PP concave shell mold through position detection. The material placing mechanism includes a material placing table. The material placing table is integrally of a cylindrical structure. A certain number of wedge-shaped blocks are arranged on the top surface of the material placing table. The wedge-shaped blocks are uniformly arranged along the circumferential direction of the material placing table at a certain interval. The wedge-shaped blocks are arranged with a reduced diameter from the outer edge of the material placing table inward. A channel is formed between two adjacent wedge-shaped blocks. The channel extends radially from the outer edge of the material placing table towards its center. A first hole is also opened downward at the position of the channel on the material placing table. The first hole penetrates the side walls of two adjacent wedge-shaped blocks. The wedge-shaped blocks are arranged with an increasing diameter from top to bottom, and there is a certain angle between its top surface and the horizontal plane. The slitting mechanism includes a slitting cylinder, a mounting plate, a cutting plate, a cutting tool head, a positioning upper plate and a support shaft. The slitting cylinder is fixed on the mounting plate. The pushing end of the slitting cylinder penetrates the mounting plate and is in transmission connection with the cutting plate. The support shaft penetrates the cutting plate and can slide relative to it. The cutting tool head is fixedly connected to the cutting plate and is used for cutting the PP concave shell mold. The positioning upper plate is sleeved on the outer edge of the cutting tool head along the circumferential direction and is connected to the cutting plate. The positioning upper plate is provided with air jet holes.

2. The PP concave shell mold splitting machine according to claim 1, wherein: The frame body extends towards the material placing mechanism side and is provided with a guide rail. The grasping mechanism is arranged on the guide rail and can slide relative to it. The grasping mechanism includes a first movable plate slidably connected to the guide rail, a first control mechanism arranged in the vertical direction and a second control mechanism arranged in the horizontal direction. The first control mechanism is fixedly connected to the first movable plate. The first control mechanism is in transmission connection with a second movable plate. The second control mechanism is fixedly connected to the second movable plate. Further, the second control mechanism can be lifted and lowered by the transmission of the first control mechanism. The second control mechanism is in transmission connection with a movable chuck. The movable chuck can be switched between a closed state and an open state and is used for grasping and releasing the material column.

3. The PP concave shell mold splitting machine according to claim 2, characterized in that: The first control mechanism can detect the position of the grasping mechanism on the guide rail. The second control mechanism can detect the closed and open states of the movable chuck. The first control mechanism and the second control mechanism can cooperate to control the action of the grasping mechanism.

4. The PP concave shell mold splitting machine according to claim 3, characterized in that: The distance between the positioning upper plate and the cutting plate is variable.

5. The PP concave shell mold splitting machine according to claim 4, characterized in that: The material distribution mechanism includes a positioning lower plate, a material distribution guide groove, and a material receiving bucket. The PP concave shell mold can be arranged in the positioning lower plate. The middle part of the positioning lower plate can be fixedly connected to the mold. A certain number of second holes are also formed in the middle part of the positioning lower plate and extend outwards. The second holes are arranged in cooperation with the concave shell mold along the circumferential direction of the positioning lower plate and penetrate the positioning lower plate from top to bottom for discharging the cut concave shell mold. The material distribution guide grooves are respectively connected below each second hole. Each material distribution guide groove is inclined outwards along the radial direction of the positioning lower plate. The material receiving bucket is correspondingly located below each material distribution guide groove for collecting the cut concave shell molds.

6. The PP concave shell mold splitting machine according to claim 5, characterized in that: The positioning lower plate and the positioning upper plate can be relatively fitted, and the cutting tool head can slide relative to the positioning upper plate to fixedly cut the PP concave shell mold.

7. The PP concave shell mold splitting machine according to claim 6, characterized in that: The first control mechanism and the second control mechanism can cooperatively control the first movable plate to move to the first position, the second position, or the third position along the guide rail. The grasping mechanism at the first position can only move to the third position. The grasping mechanism at the third position can only move to the second position. The grasping mechanism at the second position can move to the first position or the third position according to the closed or open state of the movable chuck.

8. The PP concave shell mold splitting machine according to claim 7, characterized in that: When the grasping mechanism moves from the third position to the second position, the second control mechanism detects the closed and open states of the movable chuck. If the movable chuck is in the closed state, after controlling it to change to the open state, the first control mechanism controls the grasping mechanism to move from the second position to the first position. If the movable chuck is in the open state, the first control mechanism controls the grasping mechanism to move from the second position to the third position.

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