PVC plastic extrusion forming device facilitating discharging

Abstract

The utility model relates to the technical field of plastic extrusion forming, in particular to a PVC (polyvinyl chloride) plastic extrusion forming device convenient for discharging, which comprises a working table, a stamping seat for performing mold injection stamping in the working table, a linear driver for driving the stamping seat to vertically move in a square manner, and a demolding component for demolding in the working table, the demolding assembly comprises a rack and a clamping assembly which locks the rack and vertically ascends along with the rack. The extrusion forming device is characterized in that the clamping assembly comprises a lifting table and a clamping rod which makes the lifting table and the rack make contact and be clamped in the ascending movement process, and the extrusion forming device further comprises a releasing mechanism which unlocks the clamping movement between the lifting table and the rack. According to the technical scheme, when the rack ascends, the rack makes contact with the lifting table, and the clamping rod clamps the rack and the lifting table which make contact with each other, so that when the punching base ascends, the lifting table ejects a mold in the workbench for self-demolding, and manual demolding operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic extrusion molding, in particular to a PVC plastic extrusion molding device which is convenient for discharging materials. Background Art

[0002] PVC plastic refers to the compound polyvinyl chloride. In the production process of polyvinyl chloride, the plastic needs to be injection molded and extruded. After extrusion, the mold needs to be demolded and cooled. However, the temperature of the mold after extrusion is too high, making it inconvenient to take out.

[0003] For example, Chinese patent CN214163891U discloses a PVC plastic extrusion molding device that is easy to discharge. It uses an electric cylinder to drive a push-pull rod to slide the piston up and down inside the cylinder, so that the plastic raw materials inside the PVC heating furnace can be gradually introduced into the cylinder, and the molded workpiece can be easily taken out through the sliding plate. However, in actual use, the above structure still needs to manually push the sliding plate when demolding the mold to eject the mold. On the one hand, it is easy to cause fatigue to the staff, and on the other hand, it also reduces the production cost in disguise. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The utility model aims at the above defects existing in the prior art, and proposes a PVC plastic extrusion molding device which is convenient for discharging. The problem of frequent manual taking of the mold is solved by the lifting platform 41 and the rack.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the utility model provides a PVC plastic extrusion molding device which is convenient for discharging, comprising a workbench, a stamping seat for performing mold injection stamping in the workbench, a linear driver for driving the stamping seat to move vertically in a square shape, and a demolding component for demolding in the workbench, wherein the demolding component comprises a rack and a clamping component for locking the rack and following the vertical upward movement of the rack; the clamping component comprises a lifting platform and a clamping rod for contacting and clamping the lifting platform with the rack during the upward movement, and the extrusion molding device also comprises a releasing mechanism for unlocking the clamping movement between the lifting platform and the rack.

[0008] Preferably, the release mechanism includes an extension rod and a return spring; the extension rod is slidably arranged outside the lifting platform, and one end of the extension rod is fixed to the clamping rod; the return spring is arranged outside the extension rod, its left end clamps the lifting platform, and its right end clamps the extension rod.

[0009] Preferably, the release mechanism also includes an unlocking block; the unlocking block is arranged below the workbench, and the vertical movement direction of the unlocking block is consistent with that of the rack.

[0010] Preferably, there is a pair of unlocking blocks which are arranged facing each other, and the unlocking blocks are colinear with the axis of the extension rod.

[0011] Preferably, a spraying mechanism for cooling the stamping die is installed on the workbench; the spraying mechanism includes a piston water pump, a water tank and a nozzle; the piston water pump is arranged on the workbench and is located on one side of the linear drive; the water tank is installed on the workbench and connected to the water inlet end of the piston water pump; the water inlet end of the nozzle is connected to the water outlet end of the piston water pump.

[0012] Preferably, the spraying mechanism also includes a sliding plate and a telescopic spring; the sliding plate is arranged in the piston water pump to form a first chamber and a second chamber in the piston water pump; the telescopic spring is installed on the sliding plate and is located in the piston water pump, and the telescopic spring is used to lift the sliding plate back to an initial state.

[0013] Preferably, the spraying mechanism further comprises a push rod; the push rod is arranged outside the piston water pump and one end of the push rod is fixed to the sliding sheet.

[0014] 3. Beneficial Effects

[0015] Compared with the prior art, the utility model can drive the rack to contact the lifting platform when the rack and the punch seat rise, and cause the lifting platform to eject the mold in the workbench, so as to facilitate automatic demoulding of the mold when the punch seat rises, reduce manual participation, reduce labor fatigue, and improve demoulding efficiency.

[0016] The extending rod and unlocking block are provided to achieve the contact lifting and self-unlocking of the lifting platform, so that the lifting platform can automatically fall down for resetting and return to the initial position. Furthermore, the water tank and piston water pump are provided to facilitate external cooling spraying of the ejected mold when the stamping seat rises, so that the temperature of the mold is cooled, which is convenient for the production and removal of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of the utility model under the first viewing angle.

[0018] Figure 2 It is a three-dimensional structural diagram of the rack and the lifting platform in contact and engagement in the ejection state of the utility model.

[0019] Figure 3 It is a front three-dimensional structural diagram of the utility model.

[0020] Figure 4 It is a front view cross-sectional structural diagram of the utility model.

[0021] Figure 5 It is a three-dimensional structural diagram of the utility model under the second viewing angle.

[0022] Figure 6 It is a three-dimensional structural diagram of the cleaning component of the utility model.

[0023] Figure 7 It is a three-dimensional structural diagram of the guide rod and the lifting platform of the utility model.

[0024] Figure 8 It is a three-dimensional structural diagram of the rack and the second connecting pipe of the utility model.

[0025] Fig. 9 The utility model Figure 7 Enlarged structural diagram at point A in the middle.

[0026] Fig.10 The utility model Figure 8 Enlarged structural diagram at point B in the middle.

[0027] In the figure:

[0028] 1 is a workbench; 2 is a punching seat; 3 is a demoulding assembly; 31 is a rack; 4 is a locking assembly; 41 is a lifting platform; 42 is a locking rod; 5 is a release mechanism; 51 is an extension rod; 52 is a return spring; 53 is an unlocking block; 6 is a spraying mechanism; 61 is a piston water pump; 62 is a water tank; 63 is a nozzle; 64 is a sliding sheet; 65 is a telescopic spring; 66 is a push rod. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] like Figure 1 and Fig.10 As shown, a PVC plastic extrusion molding device that is convenient for discharging includes a workbench 1, a punching seat 2 for performing mold injection and punching in the workbench 1, a linear driver for driving the punching seat 2 to move vertically in a square shape, and a demolding component 3 for demolding in the workbench 1, wherein the demolding component 3 includes a rack 31 and a clamping component 4 for locking the rack 31 and following the vertical upward movement of the rack 31; the clamping component 4 includes a lifting platform 41 and a clamping rod 42 for contacting and clamping the lifting platform 41 with the rack 31 during the upward movement, and the extrusion molding device also includes a releasing mechanism 5 for unlocking the clamping movement between the lifting platform 41 and the rack 31.

[0031] The linear drive can be a cylinder or a hydraulic cylinder, preferably a cylinder, the output end of the cylinder is connected to the stamping seat 2, and two pairs of positioning rods are inserted in the stamping seat 2. The positioning rods are used to support the stamping seat 2 to slide, and the cylinder is used to push the stamping seat 2 to descend to the position of the lower workbench 1 and perform extrusion work. When the cylinder drives the stamping seat 2 to descend, it drives the rack 31 to move downward synchronously, and a through groove for the rack 31 to pass through is opened on the workbench 1, and the rack 31 is in the shape of an L-shaped block, until the rack 31 contacts the clamping rod 42, the stamping seat 2 completes the extrusion of the mold in the workbench 1 and stops, at which time the rack 3 1 contacts the clamping rod 42 and causes the clamping rod 42 to be clamped on the rack 31. After the stamping of the mold is completed, when the cylinder drives the stamping seat 2 to rise, the rack 31 drives the clamping connected clamping rod 42 and the lifting platform 41 to do synchronous rising movement, and the lifting platform 41 is provided with an ejector rod, and the upper end of the ejector rod is installed with an ejector platform. The ejector platform is round or square, preferably square, and the square shape can match the shape of the workbench 1, so that the mold can be better ejected during the rising process of the cylinder and the stamping seat 2 after the stamping is completed, and the mold can be taken out without manual labor, which improves the demoulding effect of the mold and reduces the labor fatigue of the workers.

[0032] like Figure 3 and Figure 5 As shown, the release mechanism 5 includes an extension rod 51 and a return spring 52; the extension rod 51 is slidably arranged on the outside of the lifting platform 41, and one end of the extension rod 51 is fixed to the clamping rod 42; the return spring 52 is arranged on the outside of the extension rod 51, and its left end clamps the lifting platform 41, and its right end clamps the extension rod 51. The extension rod 51 is circular or rectangular, preferably circular, and the circle has stability and stability in movement. The extension rod 51 is used to slide horizontally in the lifting platform 41, and a circular groove is provided in the lifting platform 41 for the horizontal movement of the axis of the extension rod 51. Preferably, the size of the circular groove matches the size of the extension rod 51. The extension rod 51 is used to extend and retract the clamping rod 42, and the return spring 52 is arranged on the outside of the extension rod 51. In the initial state, the return spring 52 extends the extension rod 51 and the clamping rod 42 to the outside of the lifting platform 41 and the vertical axis movement direction of the rack 31, so that the rack 31 is easy to engage with the clamping rod 42.

[0033] like Figure 3 and Figure 5As shown, the release mechanism 5 also includes an unlocking block 53; the unlocking block 53 is arranged below the workbench 1, and the unlocking block 53 is consistent with the vertical movement direction of the rack 31. The unlocking block 53 has a pair and is respectively arranged at the lower end of the workbench 1. The unlocking block 53 is in the shape of a one-sided trapezoid. The unlocking block 53 corresponds to the vertical movement direction position of the extension rod 51, so that the extension rod 51 is driven to move into the lifting platform 41 under the limit of the unlocking block 53, and at the same time drives the card rod 42 moves in the axial direction away from the rack 31, so that when the rack 31 rises, the clamping rod 42 contacts the unlocking block 53, and drives the clamping rod 42 to lose contact with the rack 31, thereby causing the lifting platform 41 to perform a reset action of descending. Two pairs of limiting rods fixed to the lower end of the workbench 1 are provided in the lifting platform 41, and the outside of the limiting rods is provided with a reset spring 52 for driving the lifting platform 41 to descend and reset, so that the lifting platform 41 can return to its original position when it is not in contact with the rack 31.

[0034] like Figure 5 and Figure 6 As shown, the unlocking blocks 53 have a pair and are arranged facing each other. The unlocking blocks 53 are colinear with the axis of the extending rod 51. The unlocking blocks 53 are provided with a pair, which can respectively and synchronously move the axis of the pair of extending rods 51 toward one side of the lifting platform 41, so that the retraction of the extending rods 51 is more stable, and the unlocking blocks 53 are detachably mounted on the workbench 1 by bolts, which is convenient for replacing the unlocking blocks 53.

[0035] like Figure 6 and Figure 7 As shown, a spraying mechanism 6 for cooling the stamping die is installed on the workbench 1; the spraying mechanism 6 includes a piston water pump 61, a water tank 62 and a nozzle 63; the piston water pump 61 is arranged on the workbench 1 and is located on one side of the linear drive; the water tank 62 is installed on the workbench 1 and is connected to the water inlet end of the piston water pump 61; the water inlet end of the nozzle 63 is connected to the water outlet end of the piston water pump 61, and the piston water pump 61 supplies water in the water tank 62 through the nozzle 63. The nozzle 63 can be an atomizing nozzle 63 or a self-rotating nozzle 63, preferably an atomizing nozzle 63. The atomizing nozzle 63 is convenient for expanding the cooling range of the mold and for quickly spraying water to cool the mold after demolding. The water tank 62 can be preferably a cooling water tank, which is convenient for cooling the added water flow, so that the piston water pump 61 is always replenished with cooling water, so that the mold can be sprayed for cooling and the demolding speed of the mold can be accelerated.

[0036] like Figure 6 and Figure 7As shown, the spray mechanism 6 also includes a sliding piece 64 and a telescopic spring 65; the sliding piece 64 is arranged in the piston water pump 61 to form a first chamber and a second chamber in the piston water pump 61; the telescopic spring 65 is installed on the sliding piece 64 and is located in the piston water pump 61, and the telescopic spring 65 is used to lift the sliding piece 64 back to the initial state, and the first connecting pipe is arranged on the workbench 1, the first connecting pipe is connected to the water tank 62, and the second connecting pipe is connected to the water outlet end of the piston water pump 61 and is located on the workbench 1, and a one-way valve is provided in both the first connecting pipe and the second connecting pipe.

[0037] In the initial state, the telescopic spring 65 pushes out the sliding plate 64, and at the same time, the piston water pump 61 is opened through the one-way valve in the first connecting pipe, and then the water flow in the water tank 62 is replenished to the piston water pump 61 through the first connecting pipe. When the stamping seat 2 finishes stamping, it rises by the cylinder, causing the stamping seat 2 to contact the push rod 66 and causing the push rod 66 and the sliding plate 64 to slide in the piston water pump. When the sliding plate 64 slides, the cooling water in the piston water pump 61 is compressed. At the same time, the one-way valve in the first connecting pipe is closed and the one-way valve in the second connecting pipe is opened, driving the cooling water flow in the piston water pump 61 to be sprayed out through the nozzle 63 seat connected to the second connecting pipe. The preferred first connecting pipe and the second connecting pipe can be a telescopic tube or a stainless steel-grade telescopic tube, preferably a stainless steel-grade telescopic tube. The stainless steel-grade telescopic tube has a telescopic function and can be telescopic and retractable following the movement of the stamping seat 2 without affecting the circulation of water, thereby achieving automatic cooling of the mold after ejection.

[0038] like Figure 1 and Figure 7 As shown, the spraying mechanism 6 further includes a push rod 66 ; the push rod 66 is arranged outside the piston water pump 61 and one end of the push rod 66 is fixed to the sliding sheet 64 .

[0039] The push rod 66 is arranged at one end of the sliding piece 64 , and the push rod 66 contacts the punching seat 2 first. When in contact, the punching seat 2 causes the push rod 66 and the sliding piece 64 to slide upward in the piston water pump 61 , so as to compress the water flow added in the piston water pump 61 .

[0040] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A PVC plastic extrusion molding device that is convenient for discharging, comprising a workbench (1), a punching seat (2) for performing mold injection punching in the workbench (1), a linear drive for driving the punching seat (2) to move vertically in a square shape, and a demoulding component (3) for demoulding in the workbench (1), wherein the demoulding component (3) comprises a rack (31) and a clamping component (4) for locking the rack (31) and following the rack (31) to move vertically upward; characterized in that: The engaging assembly (4) comprises a lifting platform (41) and a lever (42) for engaging the lifting platform (41) with the rack (31) during the upward movement. The extrusion molding device also comprises a release mechanism (5) for unlocking the engaging movement between the lifting platform (41) and the rack (31).

2. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: The release mechanism (5) comprises an extension rod (51) and a return spring (52); the extension rod (51) is slidably arranged outside the lifting platform (41), and one end of the extension rod (51) is fixed to the clamping rod (42); the return spring (52) is arranged outside the extension rod (51), and its left end is clamped to the lifting platform (41), and its right end is clamped to the extension rod (51).

3. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: The release mechanism (5) also includes an unlocking block (53); the unlocking block (53) is arranged below the workbench (1), and the vertical movement direction of the unlocking block (53) is consistent with that of the rack (31).

4. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: The unlocking blocks (53) are in a pair and are arranged facing each other. The unlocking blocks (53) are colinear with the axis of the extending rod (51).

5. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: A spray mechanism (6) for cooling the stamping die is installed on the workbench (1); the spray mechanism (6) comprises a piston water pump (61), a water tank (62) and a nozzle (63); the piston water pump (61) is arranged on the workbench (1) and is located on one side of the linear drive; the water tank (62) is installed on the workbench (1) and is connected to the water inlet end of the piston water pump (61); the water inlet end of the nozzle (63) is connected to the water outlet end of the piston water pump (61).

6. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: The spraying mechanism (6) further comprises a sliding sheet (64) and a telescopic spring (65); the sliding sheet (64) is arranged in the piston water pump (61) to form a first chamber and a second chamber in the piston water pump (61); the telescopic spring (65) is mounted on the sliding sheet (64) and is located in the piston water pump (61); the telescopic spring (65) is used to lift the sliding sheet (64) back to an initial state.

7. A PVC plastic extrusion molding device for easy discharging according to claim 1, characterized in that: The spraying mechanism (6) further comprises a push rod (66); the push rod (66) is arranged outside the piston water pump (61) and one end of the push rod (66) is fixed to the sliding sheet (64).

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