A pneumatic batch demoulding device and method for rubber plunger products

Abstract

The present invention discloses a pneumatic batch demoulding device and method for rubber plunger products, and belongs to the technical field of rubber molding demoulding. The device includes a bracket, a clamp, a steering shaft, and a machine lifting plate; the two ends of the bracket are placed on the machine lifting plate, and the position is changed according to the up and down movement of the machine lifting plate; the paired clamps are movably connected to the bracket through the steering shafts at both ends, and the clamps can rotate freely at multiple angles. The device also includes a double-headed pneumatic telescope, the two ends of the double-headed pneumatic telescope are respectively connected to the middle of the clamp, and the double-headed pneumatic telescope controls the clamp to realize the opening and closing action. The device enables the production level to reach semi-automation, effectively improves the speed of plunger products from being separated from the mold core, saves demoulding time, improves product qualification rate and quality, and reduces production costs.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber molding demoulding, and in particular relates to a design and method of a pneumatic batch demoulding device for rubber plunger products. Background Art

[0002] Rubber products involve important parts such as sealing, transmission, decoration, vibration reduction, and resistance resistance. They are important parts for the automotive, electric power, and hydraulic industries. Their product quality and performance are directly related to the safety, energy saving, and environmental protection of automobiles, high-voltage electric dams, etc. As the automotive industry develops towards light weight, high speed, safety, energy saving, environmental protection, comfort, low cost, and long life, the position of special synthetic rubber in automotive parts will become increasingly important. The broad development prospects and rapid development of my country's automotive and electric power industries have put forward higher requirements for rubber products and raw materials required by the automotive and electric power industries, and have also promoted and driven the development of the rubber products industry and related materials, and brought opportunities and good market prospects for the development of rubber products.

[0003] The following problems are often encountered in production. Since plunger rubber products contain inner cavities, the mold will have a core inserted into the product body, and sometimes there is a barb structure, so the product will be adsorbed on the side of the mold with the core. The conventional demoulding operation is that the worker holds a vise, clamps the upper part of the product, and pulls the products out of the mold one by one. The normal production quantity of one mold product will reach 49--64 cavities / mold. The worker operation time is long. The current manual operation scheme, the worker operation time is 2 and a half minutes to 4 minutes. The mold is exposed to the air for a long time, and the temperature is lower than the mold, so that the product vulcanization temperature does not meet the requirements of the operation instructions.

[0004] Due to the workers' operating techniques and unfixed extraction angles, cracking defects exist in the products, and inspection requires 100% cracking. The inspection base is low and the inspection cost is high. Demolding is slow, inefficient, time-consuming and labor-intensive when relying on manual labor. How to improve this situation has become a problem that the industry is committed to studying. Therefore, a device and a production method for batch demoulding of plungers are urgently needed.

[0005] Chinese patent application number CN201410219773.9, with a publication date of September 3, 2014, discloses a rubber demoulding device, including a workbench, a fixing device and a pulling device are sequentially arranged above the workbench along the length direction, the fixing device includes a vertically arranged positioning plate, a cylinder is arranged on the positioning plate, a piston rod is arranged in the cylinder, and a pressing plate is installed at the protruding end of the piston rod. The present invention uses a fixing device to fix the semi-finished product after the mold core and the rubber sheet are superimposed and molded, and combines a hydraulic device to demould. The demoulding device realizes stable and efficient demoulding of the product, avoids the tearing of the product due to uneven force during demoulding, and reduces the work intensity at the same time, effectively improving the work efficiency.

[0006] Chinese patent application number CN201420305659.3, published on December 3, 2014, discloses a demoulding device for rubber parts, comprising a base plate, a demoulding cylinder, a retractable piston rod arranged on the demoulding cylinder, a U-shaped bracket fixed on the free end of the piston rod, and a clamping plate fixed on the open end of the U-shaped bracket, wherein the clamping plate has a clamping slot in the middle, a slide rail is fixed on the base plate, the U-shaped bracket can slide along the slide rail, and the slide rail limits the U-shaped bracket. A guide pin is inserted on the base plate, and the clamping slot in the middle of the clamping plate is one or more and can be adjusted according to the width, shape and position of the rubber product placed on the mold core. There are two slide rails, which support the two sides of the U-shaped bracket respectively. When working, the U-shaped bracket on the slide rail slides to the front end to clamp the rubber product; when the U-shaped bracket on the slide rail slides to the end, the rubber product is separated from the mold core. The product of the utility model has wide applicability, high yield rate, saves manpower and is simple to operate, and increases demoulding efficiency.

[0007] Although the demoulding devices of the above two applications have to some extent freed workers from the monotonous and boring production actions of clamping one by one with pliers, making the production level semi-automatic and saving demoulding time, they both have the following defects: 1) The devices of the above applications cannot handle the demoulding of rubber plungers in the vertical demoulding direction; 2) The device can only demould one row of rubber products, and the whole mold of rubber products needs to be used multiple times, and the mold is easy to cool; 3) The device cannot collect the demoulded rubber products in a centralized manner, and needs to be collected manually in batches; therefore, the devices of the above applications lack certain flexibility and are not conducive to promotion.

[0008] Therefore, based on the defects of the prior art, there is an urgent need to provide a pneumatic batch demoulding device and method that is simple and convenient, has a high product demoulding success rate, and can demould rubber plunger products. Summary of the invention

[0009] 1. Problem to be solved

[0010] In view of the problems in the prior art that plunger products have a long demoulding time, the products are easy to crack, and the existing demoulding devices are not flexible, the present invention provides a pneumatic batch demoulding device for rubber plunger products with a simple structure, a high demoulding success rate and good flexibility.

[0011] 2. Technical solution

[0012] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0013] The present invention provides a pneumatic batch demoulding device for rubber plunger products, comprising a bracket, a clamp, a steering shaft, and a machine lifting plate; the two ends of the bracket are placed on the machine lifting plate, and the position is changed according to the up and down movement of the machine lifting plate; the clamp is movably connected to the bracket through the steering shafts at both ends, and the clamp can rotate freely at multiple angles. The machine lifting plate is fixedly connected to the machine lifting rod, and the machine lifting rod plays a role of fixed support for the machine lifting plate.

[0014] As a further improvement of the present invention, the device also includes a double-headed pneumatic expander, both ends of which are respectively connected to the middle of the clamp, and the double-headed pneumatic expander controls the clamp to achieve opening and closing movements.

[0015] As a further improvement of the present invention, the double-headed pneumatic telescope includes a cylinder, a telescopic rod and a clamp connecting ring. The clamp has a ring matching the pneumatic telescope, and the ring is connected to the clamp connecting ring through a second steering shaft; the cylinder provides air pressure, and the telescopic rod is controlled by the air pressure to perform telescopic displacement.

[0016] As a further improvement of the present invention, the double-headed pneumatic expander is connected to the vacuum compressor via an air inlet, and the double-headed pneumatic expander is controlled by a manual switch.

[0017] As a further improvement of the present invention, the clamp is made of brass.

[0018] As a further improvement of the present invention, the present invention provides a pneumatic batch demoulding method for rubber plungers, which uses the pneumatic batch demoulding device for rubber plunger products to perform demoulding, comprising the following steps:

[0019] 1) After the product is vulcanized, the lower mold and the upper mold are separated, descend and slide out to reach the demoulding operation area;

[0020] 2) Control the machine lifting plate to descend from the starting position, and the demoulding device placed on it will descend accordingly, and stop when it reaches the predetermined required position. The clamp is in the open state by controlling the telescopic rod of the double-head pneumatic telescope to extend and retract;

[0021] 3) Control the telescopic rod of the double-head pneumatic telescope to extend and retract so that the clamp is in a closed state and firmly clamps the rubber plunger product;

[0022] 4) The lifting plate of the machine is controlled to rise at a uniform speed. The clamp lifts the rubber plunger to separate from the mold core and the lower mold, stops at the starting position, and places the receiving box under the demoulding device. The clamp is opened by controlling the telescopic rod of the double-head pneumatic telescope. The rubber plunger product falls into the receiving box and the demoulding is completed.

[0023] As a further improvement of the present invention, the atmospheric pressure input to the pneumatic expansion joint in step 3) is 3.5-5 MPa.

[0024] As a further improvement of the present invention, in the step 4), the rising speed of the machine lifting plate is 4 to 6 cm / second.

[0025] As a further improvement of the present invention, the present invention provides a pneumatic batch demoulding method for a rubber plunger product having two concave inner holes, comprising the following steps: the inner hole mold cavity of the rubber plunger sometimes has multiple concave inner holes. The more concave inner holes there are, the lower the product qualification rate is. During the demoulding process, the speed and pressure need to change according to the concave inner holes. The demoulding method needs to change.

[0026] By adding a control panel, the parameters required for each step can be input in advance, so that the device can complete a series of working actions in a coherent manner.

[0027] (1) After the product is vulcanized, the lower mold and the upper mold are separated, lowered and slid out to the demoulding operation area.

[0028] (2) The lifting plate of the machine is controlled to descend from the starting position, and the demoulding device installed on it also descends together and stops at the predetermined required position. The retracting rod of the double-head pneumatic retractor is controlled by the switch to make the brass clamp in the open state.

[0029] (3) Set the air pressure parameters, and control the extension and retraction of the double-head pneumatic retractor through the manual switch so that the brass clamp is in a closed state, firmly clamping the rubber plunger product with two concave inner holes.

[0030] (4) Set the parameters and control the machine lifting plate to rise at a constant speed of Acm / s. After a period of time, slow down the rising speed to A / 2cm / s. At the same time, change the air pressure intensity to A Mpa. The brass fixture lifts the rubber plunger product with two concave holes in the inner hole to separate from the mold core and the lower mold. When it reaches the starting position, stop. Take out the receiving box and place it under the demoulding device. Use the manual switch to control the telescopic rod of the double-head pneumatic telescope to extend and retract the brass fixture in the open state. The rubber plunger product with two concave holes in the inner hole falls into the receiving box. Demolding is completed.

[0031] 3. Beneficial effects

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The pneumatic batch demoulding device for rubber plunger products of the present invention is more flexible and simpler than the existing automatic demoulding device. The demoulding of rubber plunger products is controlled by switches. On the one hand, the clamp can be freely rotated at multiple angles to perform multi-directional demoulding control. On the other hand, the opening and closing force of the clamp and the rising speed of the machine lifting plate are controlled. The coordination and adjustment of the two further improve the automation degree of the device and the demoulding accuracy; at the same time, the product quality is improved. The results show that the surface of the rubber plunger products demoulded by the device of the present invention is smooth, without damage, and the appearance is intact, without potential cracking characteristics. The qualified rate of the rubber plunger products after demoulding can reach 100%, which effectively avoids the problems of long demoulding time of plunger products and easy cracking of products, which is conducive to promotion.

[0034] (2) The pneumatic batch demoulding device for rubber plunger products of the present invention, on the one hand, combines a double-headed pneumatic expander and a clamp, so that the clamp force can be controlled by controlling the air pressure, which is simple and convenient to operate and has strong flexibility; and the double-headed pneumatic expander and the clamp, and the clamp and the bracket are connected by a steering shaft, which can realize automatic angle rotation, thereby further improving the flexibility of the device in grabbing and demoulding. The overall structure of the device is simple, easy to manufacture and install, low cost, suitable for various plunger rubber products, and there is no need to change the mold and the device when demoulding plunger rubber products of various sizes. It only needs to adjust the atmospheric pressure of the pneumatic expander and the rising speed of the machine lifting plate. The operation is simple and convenient, the demoulding speed is fast, and the application range is wide.

[0035] (4) The pneumatic batch demoulding device for rubber plunger products of the present invention frees workers from the monotonous and boring production actions of clamping one by one with pliers, makes the production level reach semi-automatic, increases the speed of plunger products from being separated from the mold core, saves demoulding time, and has great value in improving production efficiency.

[0036] (5) Compared with the automated demoulding device in the prior art, the pneumatic batch demoulding device for rubber plunger products of the present invention can be reasonably coordinated with the vulcanizing machine space, does not occupy additional operating table position, and has high space utilization.

[0037] (6) The pneumatic batch demolding method for rubber plunger products of the present invention sets the atmospheric pressure in the pneumatic expansion joint to 3.5-5 MPa and the rising speed of the machine lifting plate to 4-6 cm / second according to the properties of the rubber of the rubber plunger products. Within this data range, the demolding device has a good demolding effect. If the clamping force is too small and the demolding speed is too slow, some rubber plunger products will fail to be demolded and will be stuck on the mold core. If the clamping force is too large and the demolding speed is too fast, the rubber products will be easily damaged, resulting in a decrease in the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a working cross-sectional view of the demoulding device of the present invention;

[0039] Figure 2 It is a structural diagram of a double-headed pneumatic expansion joint of a demoulding device of the present invention;

[0040] Figure 3 This is a product structure diagram of a rubber plunger with two concave holes in the inner hole.

[0041] In the figure: 1. bracket; 2. clamp; 3. double-head pneumatic telescope; 4. rubber plunger product; 5. lower mold; 6. steering shaft; 7. machine lifting plate; 8. machine lifting rod; 9. rubber plunger product with two concave inner holes; 301. cylinder; 302. telescopic rod; 303. clamp connecting ring; 304. air inlet. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with specific embodiments.

[0043] Example 1

[0044] This embodiment is a pneumatic batch demoulding device for rubber plunger products. Figure 1 It is a working cross-sectional view of the demoulding device of the present invention, as shown in Figure 1 As shown, the device includes a bracket 1, a clamp 2, a steering shaft 6, and a machine lifting plate 7; both ends of the bracket 1 are placed on the machine lifting plate 7, and the position is changed according to the up and down movement of the machine lifting plate 7; the paired clamps 2 are movably connected to the bracket 1 through the steering shafts 6 at both ends, and the clamps 2 can rotate freely at multiple angles.

[0045] The machine lifting plate 7 is fixedly connected to the machine lifting rod 8 , and the machine lifting rod 8 plays a role of fixed support for the machine lifting plate 7 .

[0046] The device also includes a double-headed pneumatic retractor 3, both ends of which are respectively connected to the middle of the clamp 2, and the double-headed pneumatic retractor 3 controls the clamp 2 to realize opening and closing actions.

[0047] Figure 2 The structure diagram of the double-head pneumatic expansion joint of the demoulding device of the present invention is as follows: Figure 2 As shown, the double-headed pneumatic telescope 3 includes a cylinder 301, a telescopic rod 302 and a clamp connecting ring 303. The clamp 2 has a ring matching the pneumatic telescope 3, and the ring is connected to the clamp connecting ring 303 through a second steering shaft; the cylinder 301 provides air pressure, and the telescopic rod 302 can be extended and retracted under the control of the air pressure.

[0048] The double-headed pneumatic expander 3 is combined with the clamp 3 so that the force of the clamp 2 can be controlled by controlling the air pressure, which is simple and convenient to operate and has strong flexibility. The double-headed pneumatic expander 3 and the clamp 2, and the clamp 2 and the bracket 1 are connected by a steering shaft, which can realize automatic angle rotation, further improving the flexibility of the device in grabbing and demoulding.

[0049] The double-headed pneumatic expansion joint 3 is connected to the vacuum compressor via the air inlet 304, so as to provide sufficient air pressure for the cylinder 301. The double-headed pneumatic expansion joint 3 is controlled by a manual switch, so as to increase the simplicity of operation.

[0050] Example 2

[0051] This embodiment provides a method for pneumatic batch demoulding of rubber plunger products, which uses the demoulding device in Example 1 to perform demoulding, including the following steps:

[0052] (1) After the product is vulcanized, the lower mold 5 is separated from the upper mold, and the mold is lowered and slid out to the demoulding operation area.

[0053] (2) The machine lifting plate 7 is controlled to descend from the starting position, and the demoulding device installed thereon also descends together, and stops when it reaches the predetermined required position. The retracting rod 302 of the double-head pneumatic retractor 3 is controlled to retract and retract through the manual switch to put the brass fixture 2 in the open state.

[0054] (3) The air pressure strength of the input double-headed start telescope 3 is set to 4 MPa; the telescopic rod 302 of the double-headed pneumatic telescope 3 is controlled by the switch to extend and retract so that the brass clamp 2 is in a closed state, firmly clamping the rubber plunger product 4.

[0055] (4) The machine lifting plate 7 is controlled to rise at a constant speed of 5 cm / s, and the brass fixture 2 lifts the rubber plunger product 4 to separate from the mold core and the lower mold 5, and stops at the starting position; the receiving box is taken out and placed under the demolding device, and the telescopic rod 302 of the double-headed pneumatic telescope 3 is controlled by a manual switch to extend and retract the brass fixture 2 in the open state, and the rubber plunger product 4 falls into the receiving box, and the demolding is completed.

[0056] The demoulding product performance and demoulding time obtained by this implementation are as follows: 1) The surface of the rubber plunger product is smooth, without damage, and the appearance is intact; 2) The rubber plunger product has no potential cracking characteristics, and the qualified rate reaches 100%; 3) The demoulding time of the device is 20 seconds. The manual operation process time is 3 minutes, which is 9 times shorter. The device of the present invention effectively improves the speed of the plunger product from the mold core and saves the demoulding time.

[0057] Example 3

[0058] This embodiment provides a method for pneumatic batch demoulding of rubber plunger products, which uses the demoulding device in Example 1 to perform demoulding, including the following steps:

[0059] (1) After the product is vulcanized, the lower mold 5 is separated from the upper mold, and the mold is lowered and slid out to the demoulding operation area.

[0060] (2) The machine lifting plate 7 is controlled to descend from the starting position, and the demoulding device placed thereon also descends together, and stops at the predetermined required position. The retracting rod 302 of the double-headed pneumatic retractor 3 is controlled to be retracted by a manual switch to make the brass fixture 2 in the open state.

[0061] (3) The air pressure strength of the input double-head start telescope 3 is set to 5 MPa, and the telescopic rod 302 of the double-head pneumatic telescope 3 is controlled by a manual switch to extend and retract the brass clamp 2 in a closed state, thereby firmly clamping the rubber plunger product 4.

[0062] (4) The machine lifting plate 7 is controlled to rise at a constant speed of 6 cm / s, and the brass fixture 2 lifts the rubber plunger product 4 to separate from the mold core and the lower mold 5, and stops at the starting position. The receiving box is taken out and placed under the demoulding device. The telescopic rod 302 of the double-head pneumatic telescope 3 is controlled by a manual switch to extend and retract the brass fixture 2 in the open state, and the rubber plunger product 4 falls into the receiving box, and the demoulding is completed.

[0063] The demoulding product performance and demoulding time obtained in this implementation are as follows: 1) The surface of the rubber plunger product is smooth, without damage, and the appearance is intact; 2) The rubber plunger product has no potential cracking characteristics, and the qualified rate reaches 100%; 3) The demoulding time of the device is 18 seconds. The original operation process time is 3 minutes, which is shortened by 10 times.

[0064] Example 4

[0065] This embodiment provides a method for pneumatic batch demoulding of rubber plunger products, which uses the demoulding device in Example 1 to perform demoulding, including the following steps:

[0066] (1) After the product is vulcanized, the lower mold 5 is separated from the upper mold, and the mold is lowered and slid out to the demoulding operation area.

[0067] (2) The machine lifting plate 7 is controlled to descend from the starting position, and the demoulding device placed thereon also descends together and stops at the predetermined required position. The retracting rod 302 of the double-headed pneumatic retractor 3 is controlled by a switch to retract and retract so that the brass fixture 2 is in the open state.

[0068] (3) The air pressure strength of the input double-head start telescope 3 is set to 3.5 MPa, and the telescopic rod 302 of the double-head pneumatic telescope 3 is controlled by a manual switch to extend and retract the brass clamp 2 in a closed state, thereby firmly clamping the rubber plunger product 4.

[0069] (4) The machine lifting plate 7 is controlled to rise at a constant speed of 4 cm / s, and the brass fixture 2 lifts the rubber plunger product 4 to separate from the mold core and the lower mold 5, stops at the starting position, and takes out the receiving box under the demoulding device. The telescopic rod 302 of the double-head pneumatic telescope 3 is controlled by a manual switch to extend and retract the brass fixture 2 to open the rubber plunger product 4. The demoulding is completed.

[0070] The demoulding product performance and demoulding time obtained in this implementation are as follows: 1) The surface of the rubber plunger product is smooth, without damage, and the appearance is intact; 2) The rubber plunger product has no potential cracking characteristics, and the qualified rate reaches 100%; 3) The demoulding time of the device is 20 seconds. The original operation process time is 3 minutes, which is shortened by 9 times.

[0071] Comparative Example 1

[0072] The pneumatic batch demoulding method for rubber plunger products in this embodiment is basically the same as that in Embodiment 2, except that: the input air pressure intensity in step (3) is set to 2.5 MPa; and the rising speed of the machine lifting plate 7 in step (4) is 3 cm / second.

[0073] The demoulding product performance and demoulding time obtained in this implementation are as follows: 1) Some rubber plunger products failed to demould and were stuck on the mold core. They had to be demoulded manually with the help of humans, and some of them were damaged in appearance; 2) The rubber plunger products had cracking characteristics due to manual demoulding, and the qualified rate was not high, only reaching 80%; 3) The operation time was 4 minutes due to manual participation.

[0074] Comparative Example 2

[0075] The pneumatic batch demoulding method for rubber plunger products in this embodiment is basically the same as that in Embodiment 2, except that: the input air pressure intensity is set to 6 MPa in step (3); and the rising speed of the machine lifting plate 7 in step (4) is 7 cm / sec.

[0076] The demoulding product performance and demoulding time obtained in this embodiment are as follows: 1) The surface of the rubber plunger product is smooth, without damage, and the appearance is intact; 2) The rubber plunger product has potential cracking characteristics, and the qualified rate reaches 90%; 3) The demoulding time is 15 seconds, but due to the excessive speed, the qualified rate is reduced.

[0077] Table 1 is the statistical results of the embodiments and comparative examples.

[0078] Table 1 Statistics of Examples and Comparative Examples

[0079]

[0080] As shown in Table 1, when the input air pressure strength is within the range of 3.5-5Mpa and the lifting platform rising speed is within the range of 4-6cm / second, the demoulding effect of the device is good, the force of the clamp and the demoulding speed are within the range, the damage to the product appearance is small, and the product is not easy to crack. If the clamp force is too small and the demoulding speed is too slow, some rubber plunger products cannot be demoulded and are stuck on the mold core. If the clamp force is too large and the demoulding speed is too fast, the rubber product is easily damaged, resulting in a decrease in the product qualification rate.

[0081] Example 5

[0082] This embodiment provides a method for pneumatic batch demoulding of a rubber plunger having two concave inner holes, and the demoulding is performed using the demoulding device in Embodiment 1, including the following steps:

[0083] (1) After the product is vulcanized, the lower mold 5 is separated from the upper mold, and the mold is lowered and slid out to the demoulding operation area.

[0084] (2) The machine lifting plate 7 is controlled to descend from the starting position, and the demoulding device placed thereon also descends together and stops at the predetermined required position. The retracting rod 302 of the double-headed pneumatic retractor 3 is controlled by a switch to retract and retract so that the brass fixture 2 is in the open state.

[0085] (3) The air pressure strength of the input double-head start retractor 3 is set to 3.5 MPa, and the telescopic rod 302 of the double-head pneumatic retractor 3 is controlled by a manual switch to retract the brass clamp 2 in a closed state, firmly clamping the rubber plunger product 9 with two concave inner holes. Figure 3 shown.

[0086] (4) Set the parameters, control the machine lifting plate 7 to rise at a constant speed of 4 cm / s, and after one second, the speed is changed to 2 cm / s, and the air pressure intensity is changed to 4 MPa. The brass fixture 2 lifts the rubber plunger product 9 with two concave holes in the inner hole to separate from the mold core and the lower mold 5, and stops at the starting position. Take out the receiving box under the demoulding device, and control the telescopic rod 302 of the double-headed pneumatic telescope 3 to expand and contract through the manual switch so that the brass fixture 2 is in the open state, and the rubber plunger product 9 with two concave holes in the inner hole falls into the receiving box. Demolding is completed.

[0087] The demoulding product performance and demoulding time obtained in this embodiment are as follows: 1) The surface of the rubber plunger product is smooth, without damage, and the appearance is intact; 2) The rubber plunger product has no potential cracking characteristics, and the qualified rate reaches 100%, while the original qualified rate is only 60%,

[0088] The above schematically describes the invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection of this patent.

Claims

1. A pneumatic batch demoulding device for rubber plunger products. Features: The device comprises a bracket (1), a fixture (2), a steering shaft (6), and a machine lifting plate (7); the two ends of the bracket (1) are placed on the machine lifting plate (7), and the position is changed according to the up and down movement of the machine lifting plate (7); the fixture (2) is movably connected to the bracket (1) through the steering shafts (6) at the two ends; the device also comprises a double-headed pneumatic telescope (3), the two ends of the double-headed pneumatic telescope (3) are respectively connected to the middle part of the fixture (2), and the double-headed pneumatic telescope (3) controls the fixture (2) to realize the opening and closing action; The double-headed pneumatic expansion joint (3) comprises a clamp connection ring (303); the clamp (2) has a ring matching the pneumatic expansion joint (3); the ring and the clamp connection ring (303) are connected via a second steering shaft; the clamp (2) can rotate freely at multiple angles; the double-headed pneumatic expansion joint (3) is connected to a vacuum compressor via an air inlet (304); the double-headed pneumatic expansion joint (3) is controlled via a manual switch; the clamp (2) is made of brass; The input air pressure strength of the double-head pneumatic telescopic device (3) is 3.5-5 MPa, and the rising speed of the machine lifting plate (7) is 4-6 cm / s.

2. A pneumatic batch demoulding device for rubber plunger products according to claim 1, Features: The double-headed pneumatic telescopic device (3) comprises a cylinder (301) and a telescopic rod (302); the cylinder (301) provides air pressure, and the telescopic rod (302) is controlled by the air pressure to perform telescopic displacement.

3. A pneumatic batch demoulding method for rubber plunger products. Features: Demolding using the demoulding device in claim 1 comprises the following steps: 1) After the product is vulcanized, the lower mold (5) is separated from the upper mold, descends and slides out to reach the demoulding operation area; 2) Controlling the machine lifting plate (7) to descend from the starting position, and the demoulding device placed thereon descends accordingly, stops at a predetermined required position, and controls the double-head pneumatic expansion joint (3) to open the clamp (2); 3) Controlling the double-headed pneumatic expansion joint (3) to make the clamp (2) in a closed state, the double-headed pneumatic expansion joint (3) inputs an air pressure strength of 3.5 to 5 MPa, and firmly clamps the rubber plunger product (4); 4) The machine lifting plate (7) is controlled to rise at a uniform speed of 4 to 6 cm / s, and the clamp (2) lifts the rubber plunger product (4) away from the mold core and the lower mold (5), stops at the starting position, and the receiving box is placed under the demoulding device. The clamp (2) is opened by controlling the double-head pneumatic telescopic device (3), and the rubber plunger product (4) falls into the receiving box, and the demoulding is completed.

Images